IR-75
IR-75 in .68mi.S. Of JCT. Usr-35, Montgomery County, Ohio received a condition grade of A (80/100). Built in 1966, the bridge carries 130K vehicles daily on IR-75 over Cincinnati Street.
IR-75 carries an A on the BridgeSafety Condition Score with 80/100. Deck, superstructure, and substructure ratings all sit in the better tier of the FHWA NBI distribution. The bridge is structurally sound by federal standards.
The bridge was built in 1966 and is now 60 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. IR-75 carries an average daily traffic count of 130,047 vehicles, with 6 lane(s) crossing Cincinnati Street. 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
IR-75 is a 60-year-old bridge located .68mi.S. Of JCT. Usr-35 in Montgomery County, Ohio. The bridge carries IR-75 over Cincinnati Street with 6 traffic lanes, handling approximately 130K vehicles per day. Built in 1966 and reconstructed in 2011, the structure spans 48.4 meters.
The bridge received a Condition Grade of A (80/100) based on Federal Highway Administration inspection data. Its deck is rated 8/9 (good), superstructure 8/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IR-75 has a Condition Score of 80/100 (Grade A). Its deck is rated 8/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
IR-75 was built in 1966 and reconstructed in 2011, making it 60 years old. The average bridge age in the United States is 48 years.
IR-75 carries approximately 130K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 48.4 meters long and located on IR-75 in .68mi.S. Of JCT. Usr-35, Montgomery County, Ohio.
No, IR-75 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
IR-75 is located .68mi.S. Of JCT. Usr-35 in Montgomery County, Ohio. The bridge carries IR-75 over Cincinnati Street. Its coordinates are 39.737889, -84.204911. It is maintained by State Highway Agency.
IR-75 carries IR-75 over Cincinnati Street. The bridge is 48.4 meters long and was built in 1966, with reconstruction in 2011.
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.