Ri 78 West By-pass over White Rock Rd
Washington County, Rhode Island · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ri 78 West By-pass over White Rock Rd in Washington County, Rhode Island, 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 1974, making it 51 years old at the 2025 inventory.
- It carries about 13,100 vehicles a day (traffic count year 2008).
- Its listed owner is the state highway agency.
- It is one of 96 of the 145 inventoried bridges in Washington County rated fair (66.2%); 19 (13.1%) 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 October 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 → (41.39416, -71.83902)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 94 ft |
| Location | 0.9 Mi NW of Jct Ri 91 |
| NBI structure number | 000000000008510 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 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 Rhode Island department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ri 4 NB & SB over Lafayette Rd | 2019 | 64,455 | Good |
| Ri 4 NB & SB over Stony Lane Scrbbltwn Brk | 1988 | 63,500 | Fair |
| Ri 4 Col Rodman Hy over Amtrak | 1953 | 56,311 | Fair |
| Ri 4 Col Rodman Hy over Ri 102 Victory Hwy | 1988 | 56,311 | Fair |
| I-95 NB & SB over Wood River & Mechanic St | 1953 | 49,247 | Fair |
| US 1 Tower Hill Rd over Ri 138 | 1969 | 46,800 | Poor |
All bridges nearby: Washington County, RI bridge conditions · every bridge in Washington County · Rhode Island bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.