I 84
I 84 in 0.5 W. Meridian, Ada County, Idaho received a condition grade of B (69/100). Built in 1965, the bridge carries 131K vehicles daily on I 84 over Ten Mile Creek.
I 84 carries a B on the BridgeSafety Condition Score with 69/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1965 and is now 61 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. I 84 carries an average daily traffic count of 131,000 vehicles, with 10 lane(s) crossing Ten Mile Creek. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
I 84 is a 61-year-old bridge located 0.5 W. Meridian in Ada County, Idaho. The bridge carries I 84 over Ten Mile Creek with 10 traffic lanes, handling approximately 131K vehicles per day. Built in 1965 and reconstructed in 2014, the structure spans 7 meters.
The bridge received a Condition Grade of B (69/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
More Bridges in Idaho
Frequently Asked Questions
I 84 has a Condition Score of 69/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 84 was built in 1965 and reconstructed in 2014, making it 61 years old. The average bridge age in the United States is 48 years.
I 84 carries approximately 131K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 7 meters long and located on I 84 in 0.5 W. Meridian, Ada County, Idaho.
No, I 84 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I 84 is located 0.5 W. Meridian in Ada County, Idaho. The bridge carries I 84 over Ten Mile Creek. Its coordinates are 43.593472, -116.398719. It is maintained by State Highway Agency.
I 84 carries I 84 over Ten Mile Creek. The bridge is 7 meters long and was built in 1965, with reconstruction in 2014.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.