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Lamine River Old US 40 Bridge



Photo taken by James Baughn

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BH Photo #105064

Street View 


Through truss bridge over Lamine River on Route M (Old US 40) just north of I-70
Cooper County, Missouri
Replaced by a new bridge
Future prospects
Replaced 2021
Built 1924; Replaced 2021
- Haller & Davis (Contractor)
- Western Bridge Co. of Harrisonville, Missouri
Main span: Riveted, 9-panel Parker through truss
Approaches: Two riveted Warren pony trusses, one on each end
Length of largest span: 181.4 ft.
Total length: 347.0 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 14.3 ft.
Approximate latitude, longitude
+38.93864, -92.94548   (decimal degrees)
38°56'19" N, 92°56'44" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/504725/4309968 (zone/easting/northing)
Quadrangle map:
Pilot Grove North
Land survey
T. 48 N., R. 19 W., Sec. 12
Average daily traffic (as of 2017)
Inventory numbers
MoDOT G-366 (Missouri Dept. of Transportation bridge number)
MONBI 4610 (Missouri bridge number on the National Bridge Inventory)
BH 21355 (Bridgehunter.com ID)
Inspection report (as of March 2018)
Overall condition: Poor
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Serious (3 out of 9)
Sufficiency rating: 88 (out of 100)
View more at BridgeReports.com

Update Log 

  • February 3, 2021: Updated by David Backlin: Updated to Lost
  • March 24, 2011: New Street View added by Jason Smith
  • February 16, 2009: New photos from Mark Frazier
  • October 17, 2005: Posted additional photos from Todd Baslee


  • Todd W. Baslee
  • J Lance - bugo [at] hotmail [dot] com
  • Mark Frazier - mfrazier404 [at] gmail [dot] com
  • Missouri Historic Bridge Inventory
  • Chris Jones
  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • David Backlin - us71 [at] cox [dot] net


Lamine River Old US 40 Bridge
Posted April 30, 2019, by Ty (cosmicrays2020 [at] gmail [dot] com)

Update in way they call it the Airline Route for anyone interested.

From my knowledge, they called it the "airline route/road/highway" because a "commercial aeroplane reliability tour in the united states" lost their way. For what reasons they had a malfunction in navigation is unknown to me. The newspaper article becomes really hard to read at the point due to fading (ha). They were able to follow the paved sections of route 2/highway 40 while they were over Missouri and were able to keep their course. Since then, the road was called the "Airline Route."

Make mention that I have read this road being referred to Airline Road, the Airline Highway, and the Airline Route in Newspapers dating to early 1925. This could be a reasonable explanation to why they called it that. Of course this is just one account from a newspaper, but it is better then assuming. So it gives a little bit of evidence. I would love to find a couple more articles backing this one up.

~~Newspaper Article Citation~~

"To Celebrate Completion of Missouri Highway No. 2," Macon Chronicle-Herald (Macon, MO), 09 March 1926, p. 3, Newspapers.com.

Lamine River Old US 40 Bridge
Posted April 29, 2019, by Ty (cosmicrays2020 [at] gmail [dot] com)

Sorry, was a little delayed in uploading the newspaper articles I mentioned earlier. But I will give footnote style citations below. Reasonable explanations why they might call it the Air-line Highway.

This portion of Route 2 in Cooper County, Missouri was started in 1924. Progress was being made until August 7th, 1924 when poor weather caused delays in construction. Haller & Davis were working on the contract for the road in three different sections. Haller & Davis were working on the graded earth portion, and another contractor was going to hard surface the road later. The bridge was not under construction at this time. It is likely that construction started sometime in September or October; however, by March of 1925 the bridge was being constructed. Traffic could cross the bridge by July but the bridge was still under construction.

1.) "Work Progressing Favorably on the New Air-line Road," The Central Missouri Republican [Boonville], 7 August 1924, p.4, microfilm, State Historical Society of Missouri, Columbia, Missouri.

2.) "Will Resume Work on Highway No. 2 in Near Future," The Central Missouri Republican [Boonville], 5 March 1925, p.1, microfilm, State Historical Society of Missouri, Columbia, Missouri.

Attachment #2 (application/pdf; 390,947 bytes)

Lamine River Old US 40 Bridge
Posted April 26, 2019, by Clark Vance (cvance [at] dogmail [dot] com)

The alternate explanation that I heard applied to the Kansas City-Independence Air Line. It was an excursion line intended to take people out of the city into the open air. At the end of the line was Fairmount Park. The route was neither straight nor fast.


Lamine River Old US 40 Bridge
Posted April 26, 2019, by Anonymous

More than likely it derives from https://en.wikipedia.org/wiki/Air-line_railroad

Lamine River Old US 40 Bridge
Posted April 26, 2019, by Daniel

I know of an Airline Highway here in CA that has the name because it's essentially the route planes took to go between SF and LA. Maybe that's the origin of the name here as well.

Lamine River Old US 40 Bridge
Posted April 25, 2019, by Ty (cosmicrays2020 [at] gmail [dot] com)

The Lamine River Old US 40 Bridge was built by the Western Bridge Company. I have a newspaper article that says the contractors were the Western Bridge Company of Kansas City, but I am pretty sure it is the Western Bridge Company of Harrisonville, Missouri. US 40 was originally Route 2 and commonly called the "Air-Line" road/highway. I don't know why they called it the "Air-line" road/highway. I guess maybe it had to do with being the fastest and most direct route between Kansas City and St. Louis. The construction for G-366 started in late 1924 and carried into 1925 and was not completed until fall of 1925 (I believe). It was a rather obscure bridge with little information covering it regarding newspapers. A good portion of it was being overshadowed by the Boonville Bridge and then later the Electric Highway. Also, it was a fair distance from any major town within the area. Boonville is a few miles east, but they were less concerned with the bridge and more concerned about the actual highway. Eventually, Route 2 became US 40 and was paved for being an "all weather road." The graded earth portion of the road was let in 1924 while the hard surfacing was let in late 1925 or early 1926. Complete construction Highway 40 was not completed until 1926.

When I get a minute or two I will see if I can upload some screenshots of the Newspapers with the information.

Lamine River Old US 40 Bridge
Posted April 30, 2008, by Eric (e [dot] kinkhorst [at] centurytel [dot] net)

This is one of my favorite bike routes. I have been over this bridge a hundred times.