I-355
I-355 in 1m.E.Of Il-53, DuPage County, Illinois received a condition grade of B (78/100). Built in 1989, the bridge carries 144K vehicles daily on I-355 over Jackson AVE..
I-355 carries a B on the BridgeSafety Condition Score with 78/100. 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 1989, making it 37 years old — past the early-life period but still well within typical service life. Routine inspections and modest repair work are normal for bridges in this age band. I-355 carries an average daily traffic count of 144,300 vehicles, with 9 lane(s) crossing Jackson AVE.. 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-355 is a 37-year-old bridge located 1m.E.Of Il-53 in DuPage County, Illinois. The bridge carries I-355 over Jackson AVE. with 9 traffic lanes, handling approximately 144K vehicles per day. Built in 1989, the structure spans 43.3 meters.
The bridge received a Condition Grade of B (78/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 8/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Toll Authority.
Location Map
Frequently Asked Questions
I-355 has a Condition Score of 78/100 (Grade B). Its deck is rated 6/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-355 was built in 1989, making it 37 years old. The average bridge age in the United States is 48 years.
I-355 carries approximately 144K vehicles per day (average daily traffic). The bridge has 9 traffic lanes. It is 43.3 meters long and located on I-355 in 1m.E.Of Il-53, DuPage County, Illinois.
No, I-355 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-355 is located 1m.E.Of Il-53 in DuPage County, Illinois. The bridge carries I-355 over Jackson AVE.. Its coordinates are 41.775844, -88.049383. It is maintained by State Toll Authority.
I-355 carries I-355 over Jackson AVE.. The bridge is 43.3 meters long and was built in 1989.
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.