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Alder Point Road Bridge


Alderpoint Road Bridge

Looking North

Photo taken by Craig Philpott in February 2010


BH Photo #156621

Street View 


Steel stringer bridge over Eel River and NWP RR tracks on Alderpoint Road
Humboldt County, California
Open to traffic
Built 1972
Double haunched girder with patchplate center section
Length of largest span: 279.9 ft.
Total length: 762.2 ft.
Deck width: 27.9 ft.
Also called
Alderpoint Bridge
Approximate latitude, longitude
+40.17343, -123.60335   (decimal degrees)
40°10'24" N, 123°36'12" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/448628/4447180 (zone/easting/northing)
Quadrangle map:
388 ft. above sea level
Average daily traffic (as of 2008)
Inventory numbers
CA 04C-25 (California bridge number)
BH 44286 (Bridgehunter.com ID)
Inspection report (as of February 2018)
Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 94.5 (out of 100)
View more at BridgeReports.com

Update Log 

  • August 12, 2019: New photo from Melissa Brand-Welch
  • April 10, 2013: New Street View added by Mike Goff
  • February 28, 2010: Updated by Craig Philpott: Added photos and adjusted description

Related Bridges 


  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Melissa Brand-Welch - melissabrandwelch [at] msn [dot] com
  • Mike Goff - michael [dot] goff [at] hotmail [dot] com


Alder Point Road Suspension Bridge
Posted October 15, 2019, by Mike Brady (mikebrady60 [at] yahoo [dot] com)

Saw it at about 6:30 in this video (from 1960s 8mm film), from the railroad: https://www.youtube.com/watch?v=N-Rq8SwvxpA

Wondered what it was, since small-road suspension bridges are rare. Some people at a railfan site identified it.

Might be able to do a frame cap, but no guarantees re. quality.

Alder Point Road Bridge
Posted August 11, 2019, by Luke

Give Melissa some time to screencap it:


Alder Point Road Bridge
Posted August 11, 2019, by Daniel

Bridgemeister states:

The Sunday November 5, 1972 edition of The Times Standard (Eureka, California) has three photos of the bridge collapsing. The caption is "Old Alderpoint Bridge Crashes into River." It continues: "Cables, securing the old Alderpoint Bridge across the North Fork of the Eel River, were cut Friday to send the structure splashing to the feet of the new concrete span that is replacing it. The $1-million new bridge was dedicated Saturday. The old suspension bridge was constructed in 1917."

does anyone have access to that? Especially the pictures.

Alder Point Road Bridge
Posted August 30, 2016, by Tony Dickson (tonydickson61 [at] gmail [dot] com)

I remember when this bridge replaced a single lane through truss bridge over the river. I was sad to see the old one go.