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Washington Route 1 over Laughingwater Creek

Lewis County, Washington · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Washington Route 1 over Laughingwater Creek in Lewis County, Washington, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1994, making it 31 years old at the 2025 inventory.
It carries about 1,375 vehicles a day (traffic count year 2022).
It is one of 209 of the 420 inventoried bridges in Lewis County rated good (49.8%); 17 (4.0%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 277 ft
Location	2.6 Miles North of Park B
NBI structure number	9450020P0000000
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.

Bridge	Built	Vehicles/day	Condition
I-5 over Salzer Creek	1951	38,131	Fair
I-5 over Cw Ry	1953	36,296	Fair
I-5 over Np Ry & Dillenbaugh CR	1954	36,296	Fair
I-5 over RR & Reynolds Rd.	2013	34,754	Good
I-5 over Blakeslee Jct RR	2015	34,754	Good
I-5 over Dillenbaugh Creek	1952	32,739	Good