Liberty Rd over State Route 99
San Joaquin County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Liberty Rd over State Route 99 in San Joaquin County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, 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 1,800 vehicles a day (traffic count year 2010).
- Its listed owner is the state highway agency.
- It is one of 220 of the 655 inventoried bridges in San Joaquin County rated good (33.6%); 63 (9.6%) 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 → (38.23335, -121.28055)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 220 ft |
| Location | 10-sj-099-37.83 |
| NBI structure number | 29 0138 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in San Joaquin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 5 SB over Paradise Cut | 1947 | 143,000 | Fair |
| Interstate 5 NB over Brookside Calaveras Riv | 1968 | 124,000 | Poor |
| Interstate 5 NB over Country Club Blvd | 1970 | 124,000 | Fair |
| Interstate 5 NB over Michigan Ave | 1970 | 124,000 | Fair |
| Interstate 5 NB over Alpine Ave | 1970 | 124,000 | Fair |
| Interstate 5 NB over Telegraph Ave | 1970 | 124,000 | Fair |
All bridges nearby: San Joaquin County, CA bridge conditions · every bridge in San Joaquin County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.