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Frontier Street over Clallam Slough

Clallam County, Washington · rated Poor in the 2025 National Bridge Inventory

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

Frontier Street over Clallam Slough in Clallam County, Washington, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1959, making it 66 years old at the 2025 inventory.
It carries about 400 vehicles a day (traffic count year 2017).
Its listed owner is the county highway agency.
It is one of 8 of the 153 inventoried bridges in Clallam County rated poor (5.2%); 8 (5.2%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Timber stringer or multi-beam girder
Length	about 62 ft
Location	0.19 E SR112
NBI structure number	082805000000000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US 101 over Morse Creek	1968	25,787	Fair
SR 101 over Bagley Creek	2021	25,487	Good
US 101 over Discovery Creek	2024	19,244	Good
US 101 over Chicken Coop Creek	2024	19,244	Good
US 101 over Jimmycomelately Creek	2004	18,344	Good
US 101 over Simdars Rd	1999	16,083	Good