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Alder Creek Rd over I90;FOURTH of July Sm Ic

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

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

Alder Creek Rd over I90;FOURTH of July Sm Ic in Kootenai 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 1988, making it 37 years old at the 2025 inventory.
It carries about 140 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 101 of the 159 inventoried bridges in Kootenai County rated fair (63.5%); 7 (4.4%) 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	Continuous prestressed concrete single box beam
Length	about 267 ft
Location	15.7 E. Couer Dalene
NBI structure number	000000000030645
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 90 Eb-wb;rmp Cd over Bnrr;post Falls Op	1977	62,000	Fair
SMA7235;NW Blvd over I 90 Eb-wb;nw Blvd Ic	2001	40,000	Fair
US 95 over I 90 E-wb;lincoln Way Ic	1960	33,500	Fair
I 90 Wbl over SH 41	2024	32,500	Good
I 90 Ebl over I 90 EB Off Ramp	2023	32,500	Good
I 90 Wbl over I 90 EB Off Ramp	2024	32,500	Good