St 3 A/main St over Water South River
Plymouth County, Massachusetts · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- St 3 A/main St over Water South River in Plymouth County, Massachusetts, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1947, making it 78 years old at the 2025 inventory.
- It carries about 28,241 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 189 of the 288 inventoried bridges in Plymouth County rated fair (65.6%); 17 (5.9%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, 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 → (42.09459, -70.71811)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 32 ft |
| Location | at JCT.139 |
| NBI structure number | M0700447JDOTNBI |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Massachusetts department of transportation.
Busiest bridges in Plymouth County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| St 3 Pilgrim Hwy over Water Jones River | 1955 | 128,534 | Fair |
| St 3 Pilgrim Hwy over Hwy Long Pond Rd | 1950 | 127,758 | Fair |
| St 24 over Hwy Oak St | 1955 | 118,909 | Fair |
| St 24 over Hwy Torrey St | 1954 | 106,550 | Fair |
| St 24 over Hwy W Chestnut St | 1954 | 101,540 | Fair |
| St 24 over Water Town River | 1952 | 95,798 | Fair |
All bridges nearby: Plymouth County, MA bridge conditions · every bridge in Plymouth County · Massachusetts bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.