Stc 3811;fh61 Rd over S.fk.boise River

Elmore County, Idaho · rated Fair in the 2025 National Bridge Inventory

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

• Stc 3811;fh61 Rd over S.fk.boise River in Elmore County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
• It was built in 1963, making it 62 years old at the 2025 inventory.
• It carries about 620 vehicles a day (traffic count year 2023).
• It is one of 65 of the 98 inventoried bridges in Elmore County rated fair (66.3%); 8 (8.2%) are rated poor.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (43.53984, -115.28979)

Component ratings

Bridge details

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

Busiest bridges in Elmore County

All bridges nearby: Elmore County, ID bridge conditions · every bridge in Elmore County · Idaho bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.