Rp IS270E to MO364 over Mo 364

St. Louis County, Missouri · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• Rp IS270E to MO364 over Mo 364 in St. Louis County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
• It was built in 2010, making it 15 years old at the 2025 inventory.
• It carries about 17,452 vehicles a day (traffic count year 2024).
• Its listed owner is the state highway agency.
• It is one of 272 of the 906 inventoried bridges in St. Louis County rated good (30.0%); 45 (5.0%) are rated poor.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (38.69878, -90.44792)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.

Busiest bridges in St. Louis County

All bridges nearby: St. Louis County, MO bridge conditions · every bridge in St. Louis County · Missouri bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.