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Sma 7113;CURTIS Rd over I 184B;CURTIS Rd Ic

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

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

Sma 7113;CURTIS Rd over I 184B;CURTIS Rd Ic in Ada County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 24,500 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 165 of the 302 inventoried bridges in Ada County rated fair (54.6%); 3 (1.0%) 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.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 203 ft
Location	In Boise;curtis Road
NBI structure number	000000000021285
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 84 Ebl & Wbl over Ridenbaugh Canal	1966	144,500	Fair
I 84 over Ten Mile Creek	1965	131,000	Fair
I 184B Ebl & Wbl over S7403;UPRR;FRANKLIN Ic	2001	76,500	Good
I 184B Ebl & Wbl over S7073;CANAL;COLE Rd	2001	76,500	Fair
I 184 Ebl over I 84 Wbl	2001	68,500	Good
SH 55;EAGLE Road over I 84 Eb-wb;eagle Rd Ic	1990	58,000	Fair