IL 53 SB
IL 53 SB in 1.7 M N I-90, Cook County, Illinois received a condition grade of C (49/100). Built in 1963, the bridge carries 124K vehicles daily on IL 53 SB over Kirchoff RD. It is classified as structurally deficient.
IL 53 SB carries a C on the BridgeSafety Condition Score with 49/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1963 and is now 63 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. IL 53 SB carries an average daily traffic count of 123,700 vehicles, with 3 lane(s) crossing Kirchoff RD. 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
IL 53 SB is a 63-year-old bridge located 1.7 M N I-90 in Cook County, Illinois. The bridge carries IL 53 SB over Kirchoff RD with 3 traffic lanes, handling approximately 124K vehicles per day. Built in 1963 and reconstructed in 2026, the structure spans 60.4 meters.
The bridge received a Condition Grade of C (49/100) based on Federal Highway Administration inspection data. Its deck is rated 4/9 (poor), superstructure 4/9 (poor), and substructure 7/9 (good). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IL 53 SB has a Condition Score of 49/100 (Grade C). Its deck is rated 4/9, superstructure 4/9, and substructure 7/9 on the NBI scale. The bridge is classified as structurally deficient.
IL 53 SB was built in 1963 and reconstructed in 2026, making it 63 years old. The average bridge age in the United States is 48 years.
IL 53 SB carries approximately 124K vehicles per day (average daily traffic). The bridge has 3 traffic lanes. It is 60.4 meters long and located on IL 53 SB in 1.7 M N I-90, Cook County, Illinois.
Yes, IL 53 SB is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
IL 53 SB is located 1.7 M N I-90 in Cook County, Illinois. The bridge carries IL 53 SB over Kirchoff RD. Its coordinates are 42.082378, -88.030844. It is maintained by State Highway Agency.
IL 53 SB carries IL 53 SB over Kirchoff RD. The bridge is 60.4 meters long and was built in 1963, with reconstruction in 2026.
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.