SH 255 over Santa Isabel Creek
Webb County, Texas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 255 over Santa Isabel Creek in Webb County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1999, making it 26 years old at the 2025 inventory.
- It carries about 1,930 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 191 of the 380 inventoried bridges in Webb County rated fair (50.3%); 4 (1.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated December 2022, 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 → (27.75127, -99.64062)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 549 ft |
| Location | 0.78 Mi West of FM 3338 |
| NBI structure number | 222400358602010 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2022 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Webb County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 35 Ml over US 59 | 1965 | 83,271 | Fair |
| Ih 35 Ml over Del Mar Blvd | 1962 | 74,048 | Fair |
| Ih 35 Ml over Chicago St & Ugarte St | 1965 | 59,067 | Fair |
| Ih 35 Ml over Sanchez St & Park St | 1965 | 50,413 | Fair |
| Ih 35 over East Fork Manadas Creek | 1960 | 49,524 | Fair |
| Lp 20 over Kcs RR & Draw | 1995 | 49,294 | Good |
All bridges nearby: Webb County, TX bridge conditions · every bridge in Webb County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.