IS 83 NBR
IS 83 NBR in 1.005 MI N Of Md 131, Baltimore County, Maryland received a condition grade of B (63/100). Built in 1954, the bridge carries 137K vehicles daily on IS 83 NBR over Timonium Road.
IS 83 NBR carries a B on the BridgeSafety Condition Score with 63/100. 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 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 NBR carries an average daily traffic count of 137,301 vehicles, with 4 lane(s) crossing Timonium 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 NBR is a 72-year-old bridge located 1.005 MI N Of Md 131 in Baltimore County, Maryland. The bridge carries IS 83 NBR over Timonium Road with 4 traffic lanes, handling approximately 137K vehicles per day. Built in 1954 and reconstructed in 2003, the structure spans 40.5 meters.
The bridge received a Condition Grade of B (63/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 6/9 (fair), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IS 83 NBR has a Condition Score of 63/100 (Grade B). Its deck is rated 7/9, superstructure 6/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
IS 83 NBR was built in 1954 and reconstructed in 2003, making it 72 years old. The average bridge age in the United States is 48 years.
IS 83 NBR carries approximately 137K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 40.5 meters long and located on IS 83 NBR in 1.005 MI N Of Md 131, Baltimore County, Maryland.
No, IS 83 NBR 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 NBR is located 1.005 MI N Of Md 131 in Baltimore County, Maryland. The bridge carries IS 83 NBR over Timonium Road. Its coordinates are 0.000108, 1.016686. It is maintained by State Highway Agency.
IS 83 NBR carries IS 83 NBR over Timonium Road. The bridge is 40.5 meters long and was built in 1954, with reconstruction in 2003.
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.