I 93 Rmps X Xe over RR Amtrak/mbta
Suffolk County, Massachusetts · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 93 Rmps X Xe over RR Amtrak/mbta in Suffolk County, Massachusetts, 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 2005, making it 20 years old at the 2025 inventory.
- It carries about 2,316 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 110 of the 490 inventoried bridges in Suffolk County rated good (22.4%); 49 (10.0%) 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 → (42.34603, -71.06051)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous steel multiple box beam |
| Length | about 142 ft |
| Location | I93&I90 Int .4K SW P.o. |
| NBI structure number | B166679QPDOTNBI |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Massachusetts department of transportation.
Busiest bridges in Suffolk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 93 /US1/ST3 over Comb Mbta & Red Ln Ssh | 1957 | 211,123 | Fair |
| I 93 /US1/ST3 over Hwy Victory Rd | 1955 | 193,593 | Fair |
| I 93 /US1/ST3 over Hwy Conley St | 1955 | 193,593 | Fair |
| I 93 /US1/ST3 over Comb Mbta & Columbia Rd | 1958 | 193,500 | Fair |
| I 93 /US1/ST3 over Hwy Hallet Street | 1956 | 190,508 | Fair |
| I 93 /US1/ST3 over RR CSX Spur | 1958 | 188,320 | Fair |
All bridges nearby: Suffolk County, MA bridge conditions · every bridge in Suffolk County · Massachusetts bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.