IS 270
IS 270 in 0.62 Mile South Of Md 124, Montgomery County, Maryland received a condition grade of B (63/100). Built in 1954, the bridge carries 172K vehicles daily on IS 270 over Md 117.
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 is a 72-year-old bridge located 0.62 Mile South Of Md 124 in Montgomery County, Maryland. The bridge carries IS 270 over Md 117 with 11 traffic lanes, handling approximately 172K vehicles per day. Built in 1954 and reconstructed in 1987, the structure spans 37.5 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 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IS 270 has a Condition Score of 63/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
IS 270 was built in 1954 and reconstructed in 1987, making it 72 years old. The average bridge age in the United States is 48 years.
IS 270 carries approximately 172K vehicles per day (average daily traffic). The bridge has 11 traffic lanes. It is 37.5 meters long and located on IS 270 in 0.62 Mile South Of Md 124, Montgomery County, Maryland.
No, IS 270 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 is located 0.62 Mile South Of Md 124 in Montgomery County, Maryland. The bridge carries IS 270 over Md 117. Its coordinates are 39.140347, -77.212197. It is maintained by State Highway Agency.
IS 270 carries IS 270 over Md 117. The bridge is 37.5 meters long and was built in 1954, with reconstruction in 1987.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.