Bridge conditions in Norfolk County, Massachusetts
343 inventoried bridges · 21 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 343 bridges in Norfolk County: 83 rated good, 239 fair, and 21 poor.
- 21 of the 343 bridges in Norfolk County, Massachusetts, are rated in poor condition (6.1%) in the 2025 National Bridge Inventory, as of .
- 83 bridges (24.2%) are rated good and 239 (69.7%) fair.
- The median Norfolk County bridge was built in 1963.
- The busiest poor-rated bridge is St 3 over Hwy Union St N Rotary (built 1957), carrying about 204,310 vehicles a day.
Good 24.2% · Fair 69.7% · Poor 6.1% of 343 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| St 3 over Hwy Union St N Rotary | 1957 | 204,310 | Poor |
| I 93 NB/US1SB over St 24 NB | 1958 | 101,100 | Poor |
| I 95 NB over Hwy Central St | 1963 | 56,375 | Poor |
| I 495 SB over Hwy Summer St | 1966 | 41,765 | Poor |
| St 3 SB over I 93 | 1957 | 41,600 | Poor |
| I 495 NB over RR Mbta/csx | 1966 | 40,744 | Poor |
| I 95 SB over I 95 /US1/ST128 | 1966 | 34,655 | Poor |
| St 37 Washngton St over RR Mbta/csx | 1948 | 29,095 | Poor |
| I 95 NB over I 95 /US1/ST128 | 1966 | 27,543 | Poor |
| Hwy Jw Mahar Hwy over Water Monatiquot River | 1982 | 23,700 | Poor |
| Hwy Plain St over Water Monatiquot River | 1929 | 22,900 | Poor |
| Hwy Squantum St over I 93 /US1/ST3 | 1954 | 19,500 | Poor |
| Hwy Cedar St over RR Mbta/csx | 1961 | 14,000 | Poor |
| Hwy Bussey St over Water Mother Brook | 1976 | 12,400 | Poor |
| Hwy Chestnut St over Water Charles River | 1922 | 10,100 | Poor |
| Hwy Park St over RR Mbta/csx | 1986 | 9,827 | Poor |
| St 1 A/dedham St over RR Pcrr (abandoned) | 1890 | 8,078 | Poor |
| Hwy High Rock St over RR Bcrr Abandoned | 1916 | 6,600 | Poor |
| Hwy Maple St over I 495 | 1966 | 5,261 | Poor |
| Hwy Stedman St over I 93 /US1/ST3 | 1954 | 3,103 | Poor |
| Hwy Revere Ct over Water E Br Neponset Riv | 1910 | 905 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| St 3 over Water Monatiquot River | 1957 | 236,250 | Fair |
| St 3 over Hwy Summer St | 1957 | 236,250 | Fair |
| I 95 NB/ST128 NB over RR Amtrak/mbta | 2008 | 205,138 | Good |
| St 3 over Hwy Union St N Rotary | 1957 | 204,310 | Poor |
| St 3 over Hwy Union St S Rotary | 1957 | 204,310 | Fair |
| I 93 /US1/ST3 over Hwy West St | 1956 | 203,932 | Good |
| I 95 /ST128 over Hwy University Ave | 2008 | 201,078 | Good |
| I 93 /US1/ST3 over Hwy Willard St | 1958 | 185,315 | Fair |
| I 93 /US1/ST3 over Hwy Furnace Brook Pkwy | 1959 | 182,929 | Fair |
| I 95 /ST128 over St 9 Worcester St | 2018 | 174,384 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Massachusetts: Massachusetts bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.