State Route 156 over UP RR Branch
San Benito County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- State Route 156 over UP RR Branch in San Benito County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1997, making it 28 years old at the 2025 inventory.
- It carries about 13,800 vehicles a day (traffic count year 2009).
- Its listed owner is the state highway agency.
- It is one of 34 of the 76 inventoried bridges in San Benito County rated fair (44.7%); 7 (9.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 7 to 5.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- 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 → (36.88282, -121.43078)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 160 ft |
| Location | 05-sbt-156-r10.47 |
| NBI structure number | 43 0046 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in San Benito County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Lomerias Rd over U.S. Highway 101 | 1969 | 52,500 | Fair |
| U.S. Highway 101 over San Juan Creek | 1931 | 51,000 | Good |
| US Highway 101 SB over Anzar Road | 1972 | 32,000 | Good |
| State Route 156 over San Juan Creek | 1961 | 26,000 | Fair |
| US Highway 101 SB over San Benito River | 1932 | 25,500 | Fair |
| US Highway 101 NB over San Benito River | 1951 | 25,500 | Fair |
All bridges nearby: San Benito County, CA bridge conditions · every bridge in San Benito County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.