US 377 over Leon Creek Branch
Mason County, Texas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 377 over Leon Creek Branch in Mason County, Texas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1955, making it 70 years old at the 2025 inventory.
- It carries about 906 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 37 of the 84 inventoried bridges in Mason County rated good (44.0%); 1 (1.2%) 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 → (30.76544, -99.45723)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 26 ft |
| Location | 9.15 Mi SW of SH 29 |
| NBI structure number | 141570014904029 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Mason County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 87/SH 29 over Koocks Branch | 2015 | 7,181 | Good |
| US 87 over Draw | 1929 | 5,279 | Fair |
| US 87 over Gamels Branch | 1935 | 4,653 | Fair |
| SH 29 over Comanche Creek | 1939 | 3,472 | Fair |
| US 87 over Martin Creek | 1929 | 3,118 | Fair |
| US 87 over Hog Branch | 1948 | 3,118 | Fair |
All bridges nearby: Mason County, TX bridge conditions · every bridge in Mason County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.