US 181 SB over Drainage Ditch

San Patricio County, Texas · rated Fair in the 2025 National Bridge Inventory

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

• US 181 SB over Drainage Ditch in San Patricio County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
• It was built in 1942 and reconstructed in 1967, making it 83 years old at the 2025 inventory.
• It carries about 4,465 vehicles a day (traffic count year 2022).
• Its listed owner is the state highway agency.
• It is one of 127 of the 241 inventoried bridges in San Patricio County rated fair (52.7%); 2 (0.8%) are rated poor.
• 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 → (27.98865, -97.41705)

Component ratings

Bridge details

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

Busiest bridges in San Patricio County

All bridges nearby: San Patricio County, TX bridge conditions · every bridge in San Patricio County · Texas bridges.

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