IS 270 RAMP C
IS 270 RAMP C in 0.85 Mile North Of Md 187, Montgomery County, Maryland received a condition grade of C (58/100). Built in 1958, the bridge carries 130K vehicles daily on IS 270 RAMP C over Is 270y Ramps B & B3.
IS 270 RAMP C carries a C on the BridgeSafety Condition Score with 58/100. 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 1958 and is now 68 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 270 RAMP C carries an average daily traffic count of 130,450 vehicles, with 3 lane(s) crossing Is 270y Ramps B & B3. 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 270 RAMP C is a 68-year-old bridge located 0.85 Mile North Of Md 187 in Montgomery County, Maryland. The bridge carries IS 270 RAMP C over Is 270y Ramps B & B3 with 3 traffic lanes, handling approximately 130K vehicles per day. Built in 1958 and reconstructed in 1990, the structure spans 91.1 meters.
The bridge received a Condition Grade of C (58/100) 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 270 RAMP C has a Condition Score of 58/100 (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 270 RAMP C was built in 1958 and reconstructed in 1990, making it 68 years old. The average bridge age in the United States is 48 years.
IS 270 RAMP C carries approximately 130K vehicles per day (average daily traffic). The bridge has 3 traffic lanes. It is 91.1 meters long and located on IS 270 RAMP C in 0.85 Mile North Of Md 187, Montgomery County, Maryland.
No, IS 270 RAMP C 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 270 RAMP C is located 0.85 Mile North Of Md 187 in Montgomery County, Maryland. The bridge carries IS 270 RAMP C over Is 270y Ramps B & B3. Its coordinates are 39.034119, -77.142828. It is maintained by State Highway Agency.
IS 270 RAMP C carries IS 270 RAMP C over Is 270y Ramps B & B3. The bridge is 91.1 meters long and was built in 1958, with reconstruction in 1990.
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.