I-90 WB
I-90 WB in 0.40 MI E Of I-294, Cook County, Illinois received a condition grade of B (69/100). Built in 1958, the bridge carries 128K vehicles daily on I-90 WB over Des Plaines River RD.
I-90 WB 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 1958 and is now 68 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-90 WB carries an average daily traffic count of 128,300 vehicles, with 4 lane(s) crossing Des Plaines River RD. The owning agency is State Toll Authority; 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-90 WB is a 68-year-old bridge located 0.40 MI E Of I-294 in Cook County, Illinois. The bridge carries I-90 WB over Des Plaines River RD with 4 traffic lanes, handling approximately 128K vehicles per day. Built in 1958, the structure spans 34.1 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 7/9 (good).
This bridge is owned and maintained by State Toll Authority.
Location Map
Frequently Asked Questions
I-90 WB has a Condition Score of 69/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-90 WB was built in 1958, making it 68 years old. The average bridge age in the United States is 48 years.
I-90 WB carries approximately 128K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 34.1 meters long and located on I-90 WB in 0.40 MI E Of I-294, Cook County, Illinois.
No, I-90 WB 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-90 WB is located 0.40 MI E Of I-294 in Cook County, Illinois. The bridge carries I-90 WB over Des Plaines River RD. Its coordinates are 41.986414, -87.860519. It is maintained by State Toll Authority.
I-90 WB carries I-90 WB over Des Plaines River RD. The bridge is 34.1 meters long and was built in 1958.
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.