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Posted September 2, 2018, by Don Morrison

The old aquaduct AKA "the secret sidewalk" is being demolished. No word on the bridge's fate, but it will likely be demolished with the aquaduct.

Posted August 30, 2018, by Luke

Nice find!

Posted August 27, 2018, by Daniel

Regarding the ADT of 549, I know that's from NBI but that's WAY more than I'd expect. I saw a total of 1 other vehicle on the dirt section that extends ~3.5mi East of the bridge. It's VERY narrow in places due to slides. I doubt it sees much traffic, given the condition.

West of the bridge I saw a few vehicles, but I doubt many (if any) were going past the bridge - they were most likely going to the bridge to hang out on the river, and the parking is mostly on the West side.

If they did their traffic survey at one of the ends of Yankee Jims Road I could see the ADT claim being reasonable (still higher than I'd expect though), but across the bridge? Not really.

Posted August 26, 2018, by Tony Arioli (Califtony707 [at] aol [dot] com)

I believe the photo entitled "Bridge circa 1967" was actually taken in the spring of 1968 - this image was used as a cover illustration for the San Mateo phone directory that year.

Posted August 26, 2018, by Daniel

I rode over it today (motorcycle), took a few pictures but nothing has changed. While there were signs indicating it was a fee area, if you just want to check out the bridge I can't imagine it being a problem.

There were several cars parked there, and people hanging out down by the river, I suspect if you want to do that it's a good idea to pay.

Posted August 20, 2018, by Joseph (mlgquickscopez295 [at] gmail [dot] com)

I just wanted to say that you guys need to add a build date to this bridge. If you look closely on photo number 1 you can see on the top of the bridge it says 1901. Perhaps this is the year it was built. Just a suggestion. Thanks!

Posted August 20, 2018, by Brianna Tarness (briannatarness82 [at] gmail [dot] com)

This bridge has been closed indefinitely to all traffic including pedestrians, with the swing span locked in the open position. A recent maintenance report found that several superstructure elements had become unstable, and therefore recommended the immediate closure of the bridge. CalTrans reportedly wants to reopen the bridge, although it is unclear when or if that will happen.

Posted August 16, 2018, by Daniel
Posted August 12, 2018, by Bill (Bmwsson [at] yahoo [dot] com)

An absolute beautiful bridge if it’s not historic does not make any difference because it certainly needs to be preserved very special place they created with this bridge my opinion

Posted August 11, 2018, by Dan (schleusenmeister [at] gmail [dot] com)

The Puerto Suello Tunnel is in use as of August 2018. SMART commuter trains have been using it since August 2017 to reach their (for now) southernmost station at San Rafael. I don't know if NWP freight trains use the tunnel.

Posted August 3, 2018, by Luke

Additionally, the NBI gives "Winding Road" as the generic name for several roads in the Sierra National Forest.

Posted August 3, 2018, by Dana and Kay Klein

I imported NBI from pin location. May not be correct.

Posted August 3, 2018, by Luke

A two-span bridge will have a gap between spans to allow for thermal expansion.

There's no gap, so it's more than likely a single span with additional support.

Posted August 3, 2018, by Daniel

I'd have considered that 2 span, do you consider it single span because it's continuous at the pier rather than pinned?

I agree that it at least resembles a Bailey.

Posted August 3, 2018, by Luke

Looks more like a single-span Bailey-pattern truss with a support pier at the midpoint.

Posted August 3, 2018, by Daniel

The NBI data doesn't seem to match this bridge.

This is a 2 span bridge, while the NBI info has span length and total length within a foot of each other.

NBI states that it has a wooden wearing surface, the pictures show a wooden deck with steel wearing surface on top.

NBI states that it's on Winding Road/05S01, google maps shows Edison Lake Road.

Are you sure that's the right bridge?

Posted July 28, 2018, by Tim (Bridgebuilder1 [at] hotmail [dot] com)

I worked on this bridge in 2000. My hand print is in printed in the wall of hands that we made for the local school. One of the first graduates of Roberts Ferry School also was able to put his hand print in.

Posted July 22, 2018, by Jeff Wieland (jjwieland [at] gmail [dot] com)

The "unknown missing bridge" appears to have been the "SP - Felton Trestle", a Pratt through truss that was added a few months ago.

Posted July 19, 2018, by Luke


Posted July 19, 2018, by Daniel

Is this an old railroad bridge, or was it a road bridge?

Posted July 10, 2018, by Daniel has a photo that I'm uploading that I believe is this bridge. It's on photobucket, so I don't trust it to stay visible there, hence the upload.

Posted July 4, 2018, by Jason Smith (flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com)

The 99th mystery bridge takes us to California and the Springs. There, a through truss bridge, having been submerged since 1975, has revealed itself presenting a possibility to save it before the drought ends. Details here:

Posted July 1, 2018, by Pete Williams

400 feet sounds like the replacement bridge, yet the article also seems to indicate the current bridge is 150 years old. Sounds like sloppy reporting

Posted July 1, 2018, by Ed Hollowell (erhollowell [at] aol [dot] com)

Two thoughts"

1)Now someone can make an entry for the Old Mosquito Road Bridge.

2) The Mt. Democrat story said the new bridge was 400 feet above the river. The bridge in this entry is nothing like that high.

Posted June 29, 2018, by Christopher Finigan

This bridge deserves to be preserved, restored, and reopened for pedestrian usage in Lake County, as she may well be its only surviving pin-connected through truss bridge.

Posted June 28, 2018, by Matt Lohry

The bridge in the postcard photo is probably the pre-1939 bridge. It looks markedly different than the current one.

Posted June 28, 2018, by Daniel has info about a replacement, including:

"Located 400 feet above the river, it will replace the existing Mosquito Road Bridge that was built 150 years ago." states that it was built in the 1800s, possibly 1859. It also states that there was a new bridge built in 1939, so I suppose 1939 might be accurate - I guess it depends on whether it was rebuilt or fully replaced. has more info on the replacement.

Posted June 28, 2018, by Daniel

Is 1939 accurate? I found a photo (credit there was to the California State Library) claiming to be from 1914. I'm sure it's been rebuilt at some point since then.

Posted June 21, 2018, by Daniel
Posted May 14, 2018, by Anonymous

Regularly traversed on Jay Leno's Garage -- and increasingly featured in "teaser" clips of featured cars, etc.

Posted May 12, 2018, by Jeff Wieland (jjwieland [at] gmail [dot] com)

Not sure why Hercules has the "M/V" applied -- she still has her triple-expansion engine and Scotch boiler, so she's not a "motor vessel".

Posted May 11, 2018, by Leslie R trick

Here is Joseph Strauss's proposed design for the Golden Gate bridge the reason this design did not work is because the the public thought it was ugly.

Posted May 8, 2018, by Luke

Also mentions that the old bridge was scooped up by Nevada City to become a footbridge.

Posted May 8, 2018, by Daniel
Posted May 6, 2018, by Leslie R Trick

okay I will remember that.

Posted May 5, 2018, by Luke

Leslie, please add the flickr page's link and note the creative commons on your image:

Posted May 5, 2018, by Luke

Leslie, please add the flickr page's link and note the creative commons on your image

Posted April 30, 2018, by Anonymous

Postcard is of the 1898 one.

Posted April 28, 2018, by Luke

After further research, it appears that your image IS of Webster Street... just not the 1898 one this entry is for. It's of the 1871 iteration that was relocated to Bay Farm Island after it was replaced by this one.

Posted April 28, 2018, by Douglas Butler

You can move the last photo to the Webster Street Drawbridge Luke

Posted April 28, 2018, by Luke

Yes, as your image matches up more with


than it does with any image of Webster Street.

Posted April 27, 2018, by Luke

Doug, your Caltrans image matches up with the old Bay Farm Island Bridge:

Posted April 12, 2018, by Richard Doody (rpdoody3 [at] gmail [dot] com)

Verified Butte Creek is the streaam from Google satellite view and made correction. Surprising as I seem to recall the World Guide to Covered Bridges said "Honey Run" and "run" is a southernism for creek. Go figure

Posted April 12, 2018, by David Houghton (emdgp9 [at] sbcglobal [dot] net)

Overview is incorrect. Bridge is over Butte Creek, not honey run. Needs correcting by someone who has edit capabilities

Posted March 29, 2018, by Craig Philpott (craigphilpott63 [at] gmail [dot] com)

Added three pictures from overhead drone camera

Posted March 29, 2018, by David Backlin (us71 [at] cox [dot] net)

Flagged as duplicate

Posted March 29, 2018, by Craig Philpott (craigphilpott63 [at] gmail [dot] com)

Bridge has been rehabilitated and new photos submitted by friend of site.

Posted March 29, 2018, by Craig Philpott (cphilpott [at] puc [dot] edu)

This is a duplicate posting of bridge: Oregon Creek Covered Bridge 05-58-01

Lotus Bridge (California)
Posted March 23, 2018, by Jeri Lee Hicks (jl_riverdays_09 [at] hotmail [dot] com)

The new bridge being built is now experiencing high water and the supports used to assist the folks working on it are unstable and in danger of floating down stream.

Posted March 22, 2018, by Rodi Lee (rodi1918 [at] gmail [dot] com)

The name of the creek is Hancock (no 'd')

The stone aqueduct/flume in not a vehicle bridge but part of the Negro Hill ditch.

Posted March 18, 2018, by Macalister Clyde Crowl (mac [dot] crowl [at] gmail [dot] com)

Closed until 9/18.

Posted March 12, 2018, by Nathan Holth (webmaster [at] historicbridges [dot] org)

The overhead bracing is not original. At first, I thought it was a replacement for original bracing. Then I noticed the bridge is configured as a Half-Hip Pratt. Then I found the NRHP Nomination... If the NRHP nomination (attached) is accurate, this bridge was originally a pony truss! Never heard of a half-hip pin connected pony truss of this span length.

Posted March 9, 2018, by John Fahey (jtfftj [at] gmail [dot] com)

I can share a memory from this bridge. My parents and I took a rare family vacation from home in Los Angeles to northern California. The course of our travels brought us to an overnight in Redding. It was 1962 and I was 16. I should add that the last description anyone would have used for me was athletic. We stayed at a motel on Market Street after a day's driving and I took a walk towards the river. And from that street I saw the railroad bridge in the distance. And for some unknown and unexpected reason, I started to run across the open field to the bridge. It felt good to reach the bridge without stopping. I was not on to take any joy from running, but I was happy in that moment. I see now on the map the distance was about 3 tenths of a mile. Certainly not very far by any standard, but far enough to make a memory that stays with me to this day.

Posted February 27, 2018, by Anonymous

Under new research by the City, it has been determined that this bridge was "built by 1928". Not 1940, which cal-trans has assumed for years.

Honeydew Bridge (California)
Posted February 26, 2018, by Nathan Holth (webmaster [at] historicbridges [dot] org)
Posted February 24, 2018, by Christopher Finigan

The reason why the Eastern Span was replaced was primarily due to its foundations. The Western Span is constructed on caissons going all the way down to the bedrock underneath the bay. The Eastern span, however, was constructed on timber pilings that went only 100-150 ft into the soil beneath the bay. In an earthquake, the soil, which is mostly clay, will shake like a bowl of jello in what is known as amplification. The wooden pilings would have collapsed and the bridge would have plunged into the bay.

Posted February 20, 2018, by Anonymous

Name is *Ruck-a-Chucky

Posted February 19, 2018, by Luke

Love the pics of the Key System's Bay Bridge motors.

(For those who don't know, the lower level of the Bay Bridge was half road, half trolley until 1959.)

Posted February 19, 2018, by Raul (Raul [dot] suarez [at] wavestream [dot] com)

This bridge has seen a major facelift that is not reflected in your indicators

Posted February 15, 2018, by Anonymous

This bridge has been unused since 1976, and was operated by the SP.

Posted February 14, 2018, by Bob Genova (rgeno [at] earthlink [dot] net)

This bridge brings back memories of growing up in Burbank in the Fifties and Sixties.

Those old SP logos, in brass I believe, would be a treasure. I think all four are still intact.

Posted February 10, 2018, by Nina

Thanks, Don :)

Posted February 10, 2018, by Don Morrison

Pretty good chance that this is the bridge you're looking for, Nina.

Posted February 3, 2018, by H fox (Hfox [at] hardyfox [dot] com)

The bridge you call “River Road Bridge” is actually “Hacienda Bridge.” It is a county of Sonoma Historic bridge.

Posted January 31, 2018, by Jeff Shaner (jeff2076 [at] gmail [dot] com)

I have a 1 foot section of suspension cable that was handed down to me I would donate to the right museum.

Posted January 26, 2018, by Luke

1963 aerial shows the current bridge there, looking awfully fresh.

So I'm thinking someone at Caltrans/FWHA derped and put down "1926" instead of "1962".

Posted January 26, 2018, by Luke

Historicaerials shows a railroad girder here in 1952.

Posted January 26, 2018, by Ed Hollowell (erhollowell [at] aol [dot] com)

Nice video David. I lived in the South Bay and had been through the tunnel many times but it never occurred to me that it was the same Vermont that I knew in San Pedro!

Posted January 26, 2018, by Ed Hollowell (erhollowell [at] aol [dot] com)

Ok, so I saw an old street map that was on the wall in Martin Chevrolet in Torrance that seemed to date from the 1960's and it showed Hawthorne Blvd. jogging to the east at 190th St. and both of those streets crossing the tracks -at grade level- before Hawthorne returned to it's current alignment. Also there is a scene in the movie "Gone In Sixty Seconds" (the 1970's one) which had a chase going over that railroad grade crossing. That is why I am saying that the railroad, Hawthorne Blvd. and 190th St. did not exist in the current configuration until sometime in the 1970's.

Posted January 25, 2018, by John (Abdale19211 [at] hotmail [dot] com)

Is this the tunnel in the Twilight Zone Hichhiker episode? Looks very much like it.

Posted January 16, 2018, by Karl Gohl (akgguy [at] yahoo [dot] com)

This bridge has been completely replaced. The new bridge opened in late 2016 or early 2017. The wooden pedestrian bridge is still there.

Posted January 12, 2018, by Elizabeth Yarlott (H2oyarlott [at] aol [dot] com)

In 1975 my husband to be and I carved our initials on this bridge. In 2007 we revisited the bridge, and though there had been a fire, we still made out our initials.

Posted January 10, 2018, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)

Seems to me the steel stringers are acting more like piers or bents. I have zero engineering experience, BTW


Posted January 9, 2018, by Nathan Holth (webmaster [at] historicbridges [dot] org)

This bridge remains in storage and available for reuse. Please see the listing (which includes a link to in-storage photos) on the Historic Bridge Foundation Bridge Marketing website here.

Posted January 9, 2018, by George oakley (georgeoakley49 [at] yahoo [dot] com)

Thank you,Luke.

Posted January 9, 2018, by Luke

Based off of the road is California state highway 271, MEN is the abbreviation for Mendocino County, and 17.92 is the mile marker

Posted January 9, 2018, by george oakley (georgeoakley49 [at] yahoo [dot] com)

Can someone explain to me what 271 MEN and 1792 mean on the sign in picture #2?

Posted January 8, 2018, by Dave King (DKinghawkfan [at] hotmail [dot] com)

NBI has this as a steel stringer. Should the bridge be classified by the wood under the deck or the steel stringers underneath?

Posted January 8, 2018, by Stephanie (yngmark7777 [at] yahoo [dot] com)

This bridge washed out during the 2017 flood. The new bridge will be completed soon

Posted January 4, 2018, by richard Hartzell (RICHARD_HARTZELL [at] DOT [dot] CA [dot] GOV)

Saw some errors on your website.

The Caltrans Bridge # is 53-0382

The name is College Street Overcrossing or College St OC.

The bridge was built in 1938/1939 -- under Roosevelt's/ Ickes New Deal program

Posted January 3, 2018, by laura cooskey (mattolehistory [at] frontiernet [dot] net)

Good entry and information. Only thing is that the bridge was completed in 1923. I don't know why all the official information says 1935. I have a photo of tow-headed little kids born in the 1910s posing next to it when it was brand-new. Buck Miner (born 1925) said it was there when he was born. The new road on the north side of the Mattole River, replacing the Gardner Grade, was opened in 1923, when the two bridges across the Mattole were completed: the suspension bridge at Shields' Ford (just upstream from present Elwyn Lindley bridge) and the Concrete Arch bridge just upstream of present A.Way Park.

Thanks for letting me set the record straight.

Posted January 2, 2018, by Michael Larson (mikel [at] RangerBlue [dot] com)

After considering my statement of Dec 30, I rescind the comment that the I Street Bridge was fabricated in Pennsylvania. Kyle Wyatt indicated that it had been fabricated in 1911 in the east, shipped to Sacramento and then assembled in 1912. He did not specify fabrication in Pennsylvania. That was my mistake.

Posted December 30, 2017, by Michael Larson (mikel [at] RangerBlue [dot] com)

Some items on this page appear to be incorrect or to be referring to a different bridge or location. Items of concern are the location of the Yolo Causeway Bridge, and latitude and longitude designations. Rather than as indicated on the map the Yolo Causeway Bridge begins at the western end of West Sacramento and extends westward to Chiles Rd. carrying Highway 80 (The Lincoln Highway, The Dwight D. Eisenhower Highway) over the Yolo Bypass, It does not go “over [the] Sacramento River."  The photo of the 1920s postcard does show the Yolo Causeway with its bascule bridge. The newer causeway no longer contains the bascule bridge.

The posted longitude and latitude point to a highway bridge that crosses the Sacramento Deep Water Ship Channel. That bridge is not a bascule bridge. The north bound portion of Jefferson Blvd. to the east of that location does include a draw bridge. It could be a bascule bridge. The William B. Stone lock to the east of this bridge, as well as the bridge itself, are no longer functional as lock or moving bridge. The north bound portion of Jefferson Blvd. also contains a single railroad track.

Posted December 30, 2017, by Michael Larson (mikel [at] RangerBlue [dot] com)

I have no access to technical drawings of the I Street Bridge. I have collected the following information regarding bridges crossing within the immediate area of the current bridge from the California RR Museum Library, 111 I St, Sacramento.

The "1911" I Street Bridge is the fifth bridge to have crossed within a hundred yards of its current location. The first was a wagon bridge built in 1858 approximately 100 feet upstream of the current bridge. It was followed in 1870 by a railroad bridge built by California Pacific Railroad. In 1875 the Central Pacific Railroad built an improved bridge beside it. In 1895 the Southern Pacific Railroad built a bridge downstream of the current bridge. This bridge left the west bank near the current F Street (historically Harriett Street). This bridge met the east side of the river near the current location of the turntable at the California RR Museum. The tracks then ran north and east to the 1879 Central Pacific passenger depot.

The California RR Museum Library has photos of all five of these bridges. In Summer of 2017 these photos were in boxes labeled Shops 10A and Shops 10B. Shops 10A has photos of the first four bridges. Shops 10B has photos specific to the "1911" bridge.

The comments and illustrations made by the 1996 organizer of these boxes contradicted what I saw in the photographs. These contradictions were very confusing and raised questions in my mind regarding the specific location of these bridges. My confusion was completely eliminated when Kyle K. Wyatt, Parks and Recreation Historian at the library, offered a diagram of the true locations of the five bridges. The title of this document was "SP Sacramento Shops Vault Coll. CSRM March 1912" This particular diagram was not part of the boxes that I viewed in Summer 2017.

Kyle Wyatt also related to me that the I Street Bridge was fabricated in Pennsylvania in 1911, shipped to Sacramento, and assembled in situ in 1912. Therefore, my "1911".

Kyle Wyatt may have access to specific technical drawings of the I Street Bridge.

I have copies of many of the photographs, illustrations, and documents from the mentioned boxes. I do not have permission to publish them.

The Museum Library is one of many resources for information regarding this bridge.

Note: California Pacific and Central Pacific were two separate companies at the relevant times mentioned.

I welcome any comments or corrections.

Posted December 25, 2017, by Dave Wade (dmwade55 [at] gmail [dot] com)

While I'm not a big fan of graffitti, this particular bridge has a long and rich tradition of it. I don't know how it started, but its near a college town and also on a popular cycling route. I think I have a recent photo and will upload it when I find it.

Posted December 18, 2017, by Brian Ferrero

Soon to be a bridge to nowhere.........12/2007

Posted November 30, 2017, by John Marvig (marvigj27 [at] gmail [dot] com)

Reading this, a parallel light rail bridge is proposed to be built alongside the bridge, not detracting from the historic nature. Hopefully this plan will ultimately be executed.

Posted November 27, 2017, by travis percell (roadtripfpv [at] gmail [dot] com)

Visited last month:

Posted November 14, 2017, by Bill Black (William [dot] Black [at] Berlin [dot] de)

Bridge inventory number

Posted November 11, 2017, by Erik Hoffman (edh4801 [at] gmail [dot] com)

Dear John Leighton,

That WAS the prognosis, but Yuba County just got a grant, so now they say they're going to for sure fix it in Spring 2018.

Posted October 14, 2017, by Nathan Delaplaine (ndelaplaine [at] gmail [dot] com)

Looks like this bridge needs to get replaced because it no longer operates.

Posted October 11, 2017, by Anonymous

Post them, please.

Posted October 10, 2017, by Hari (hkhalsa10 [at] gmail [dot] com)

I have pictures of the bridge from 10/8/17 and can confirm it is open for traffic.

Posted October 1, 2017, by Tony Arioli (Califtony707 [at] aol [dot] com)

The second image was used on the cover of the 1968 San Mateo telephone directory, if my memory serves me right. The coming of the replacement span in late 1967 to me was a graphic reminder of the rapid changes that were taking place in the Bay Area...

Posted September 17, 2017, by Ed Hollowell (erhollowell [at] aol [dot] com)

Obviously the bridge in the street view is the CA 162 bridge.

Posted September 16, 2017, by Bill Bishop (wbishop48 [at] gmail [dot] com)

My pals and I dived off the suspension bridge at Bidwell Bar State Park many times in the 1960s. The ranger was nicknamed "Smiley". If he saw us he would yell and wave his arms but he couldn't catch us-didn't even try. There used to be a picture of Smiley in the Municipal Auditorium in Oroville with his real name. We used to carry our tubes up the railroad grade past the confluence of the South Fork and then float back down to Bidwell Bar. Used to be a concession on the north side with a bumper pool table. I was very sad when they built the dam.

Posted September 8, 2017, by David (volcrano [at] gmail [dot] com)

I think this is mislabled. The 2-mile long Summit Tunnel is the one still in use. The one that is abandoned is tunnel #6 which is 1659 feet. Tunnels 7 and 8 were also abandoned.

Posted August 26, 2017, by Christopher Finigan

I drove over the replacement bridge on January 16, and noticed the old bridge had recently been demolished. YouTube videos show the bridge being demolished on January 10, 2017. Antlers Bridge: 1941-2017

Posted August 25, 2017, by Mark Shoemaker (markshoemaker [at] msn [dot] com)

There are aerial fotos from 1938 showing two Culver bridges crossing Ballona Creek, east and westbound. Do you know what happened to the second bridge? The current crossing is now only one lane in each direction.

Posted August 20, 2017, by Christopher Finigan

Probably relocated here in 1932.