IS 83/IS 695
IS 83/IS 695 in 1.09 MI S Of Md 139, Baltimore County, Maryland received a condition grade of C (56/100). Built in 1954, the bridge carries 223K vehicles daily on IS 83/IS 695 over Thornton Road.
IS 83/IS 695 carries a C on the BridgeSafety Condition Score with 56/100. 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 1954 and is now 72 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. IS 83/IS 695 carries an average daily traffic count of 222,500 vehicles, with 10 lane(s) crossing Thornton Road. 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
IS 83/IS 695 is a 72-year-old bridge located 1.09 MI S Of Md 139 in Baltimore County, Maryland. The bridge carries IS 83/IS 695 over Thornton Road with 10 traffic lanes, handling approximately 223K vehicles per day. Built in 1954 and reconstructed in 2013, the structure spans 35.4 meters.
The bridge received a Condition Grade of C (56/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 6/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IS 83/IS 695 has a Condition Score of 56/100 (Grade C). Its deck is rated 6/9, superstructure 6/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
IS 83/IS 695 was built in 1954 and reconstructed in 2013, making it 72 years old. The average bridge age in the United States is 48 years.
IS 83/IS 695 carries approximately 223K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 35.4 meters long and located on IS 83/IS 695 in 1.09 MI S Of Md 139, Baltimore County, Maryland.
No, IS 83/IS 695 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
IS 83/IS 695 is located 1.09 MI S Of Md 139 in Baltimore County, Maryland. The bridge carries IS 83/IS 695 over Thornton Road. Its coordinates are 0.000108, 1.016686. It is maintained by State Highway Agency.
IS 83/IS 695 carries IS 83/IS 695 over Thornton Road. The bridge is 35.4 meters long and was built in 1954, with reconstruction in 2013.
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.