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Monohon Landing Rd over North Fork Willapa River

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

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

Monohon Landing Rd over North Fork Willapa River in Pacific 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 1981, making it 44 years old at the 2025 inventory.
It carries about 900 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 68 of the 120 inventoried bridges in Pacific County rated good (56.7%); 9 (7.5%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 182 ft
Location	4.4 E Jct 105 101
NBI structure number	083696000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 101 over Columbia R	1966	23,300	Poor
US 101 over Columbia R	1966	22,526	Fair
US 101 over S Fk Willapa River	1966	10,253	Poor
US 101 over N Fk Willapa	1992	8,151	Fair
US 101 over Skidmore Slough	1980	8,012	Good
US 101 over Chinook R	1927	7,256	Fair