US 63 S over Gasconade Rvr

Maries County, Missouri · rated Fair in the 2025 National Bridge Inventory

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

• US 63 S over Gasconade Rvr in Maries County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
• It was built in 1978, making it 47 years old at the 2025 inventory.
• It carries about 5,331 vehicles a day (traffic count year 2024).
• Its listed owner is the state highway agency.
• It is one of 37 of the 69 inventoried bridges in Maries County rated fair (53.6%); 10 (14.5%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• It was rated poor in the 2024 inventory and is now fair (superstructure 4 to 5).
• Its most recent inspection on record is dated June 2024, on a 12-month routine inspection cycle.
• It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (38.14638, -91.88243)

Component ratings

Bridge details

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

Busiest bridges in Maries County

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

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