Rating:
4 votes

Mosquito Lake Road Bridge

Whatcom County, Washington
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Photos 

Photo taken by Jeffrey N. Curtis.

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

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Map 

Description 

This bridge was built in 1915 by the Toledo Bridge and Crane Company and the Weymouth Construction Company. It was originally located across the Nooksack River on Guide Meridian Road, current WA 539, south of Lynden. In 1951 the steel through-truss was moved to its present location across the Middle Fork Nooksack River, when a modern structure replaced it on Guide Meridian Road. When relocated two truss panels where removed, reducing the 380-foot bridge span to its present 338 feet. Nonetheless, the bridge remains the longest pin-connected highway bridge in Washington State. In 2007 Whatcom County replaced the deck and approaches and painted the bridge.

Source: Spanning Washington – Craig Holstine and Richard Hobbs

View Uglybridges.com report

Facts 

Overview
Through truss bridge over Middle Fork Nooksack River on Mosquito Lake Road
Location
Whatcom County, Washington
Status
Open to traffic
History
Built 1915; Moved here and modified 1951; Rehabilitated in 2010
Builders
- Toledo Bridge & Crane Co. of Toledo, Ohio (Contractor)
- Weymouth Construction Co. (Contractor)
Design
Pennsylvania through truss
Dimensions
Length of largest span: 337.9 ft.
Total length: 416.0 ft.
Deck width: 15.4 ft.
Vertical clearance above deck: 17.5 ft.
Recognition
Posted to the National Register of Historic Places on July 16, 1982
Also called
Middle Fork Nooksack River Bridge
Approximate latitude, longitude
+48.78543, -122.11283   (decimal degrees)
48°47'08" N, 122°06'46" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/565167/5403983 (zone/easting/northing)
Quadrangle map:
Canyon Lake
Inventory numbers
NRHP 82004305 (National Register of Historic Places reference number)
BH 34606 (Bridgehunter.com ID)
Inspection (as of 08/2012)
Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 66.5 (out of 100)
Average daily traffic (as of 2009)
140

Categories 

Built 1915 (1,021)
Built during 1910s (7,230)
NR-listed (2,619)
Nooksack River (6)
One-lane traffic (7,197)
Open (30,671)
Owned by county (16,984)
Painted green (29)
Pennsylvania truss (340)
 Span length 250-500 feet (919)
Through truss (10,412)
Toledo Bridge & Crane Co. (5)
Total length 250-500 feet (3,655)
Truss (25,202)
Washington (924)
Weymouth Construction Co. (1)
Whatcom County, Washington (23)

Update Log 

  • July 4, 2014: Updated by Luke Harden: Pin was several feet from the actual bridge, bridge still exists. Added info about 2010 rehab
  • August 7, 2012: Photo imported by Luke Harden
  • March 18, 2012: Updated by Craig Philpott: corrected location

Sources 

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Comments 

Mosquito Lake Road Bridge
Posted December 11, 2010, by Anthony Dillon (spansaver [at] hotmail [dot] com)

This is a beauty indeed!

In reading the history, I am a little surprised that they reduced it's length by removing 2 panels.....and then added approach spans to it.

Mosquito Lake Road Bridge
Posted December 11, 2010, by Tom Hoffman (tehoffm [at] hotmail [dot] com)

Nice Pennsylvania Truss!