IS 270 E
IS 270 E in S 33 T 44 N R 6 E, St. Louis County, Missouri received a condition grade of C (55/100). Built in 1967, the bridge carries 162K vehicles daily on IS 270 E over Crd Von Talge RD Bnsf R.
IS 270 E carries a C on the BridgeSafety Condition Score with 55/100. 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 1967 and is now 59 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 E carries an average daily traffic count of 162,180 vehicles, with 7 lane(s) crossing Crd Von Talge RD Bnsf R. 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 E is a 59-year-old bridge located S 33 T 44 N R 6 E in St. Louis County, Missouri. The bridge carries IS 270 E over Crd Von Talge RD Bnsf R with 7 traffic lanes, handling approximately 162K vehicles per day. Built in 1967 and reconstructed in 1991, the structure spans 84.7 meters.
The bridge received a Condition Grade of C (55/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 5/9 (fair), and substructure 5/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IS 270 E has a Condition Score of 55/100 (Grade C). Its deck is rated 6/9, superstructure 5/9, and substructure 5/9 on the NBI scale. The bridge is not classified as structurally deficient.
IS 270 E was built in 1967 and reconstructed in 1991, making it 59 years old. The average bridge age in the United States is 48 years.
IS 270 E carries approximately 162K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 84.7 meters long and located on IS 270 E in S 33 T 44 N R 6 E, St. Louis County, Missouri.
No, IS 270 E 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 E is located S 33 T 44 N R 6 E in St. Louis County, Missouri. The bridge carries IS 270 E over Crd Von Talge RD Bnsf R. Its coordinates are 38.505239, -90.343917. It is maintained by State Highway Agency.
IS 270 E carries IS 270 E over Crd Von Talge RD Bnsf R. The bridge is 84.7 meters long and was built in 1967, with reconstruction in 1991.
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.