Bridge conditions in Plymouth County, Massachusetts

288 inventoried bridges · 17 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Plymouth County tracks close to typical: 17 of its 288 inventoried bridges (5.9%) are rated poor, against a national rate of about 7%.

17 of the 288 bridges in Plymouth County, Massachusetts, are rated in poor condition (5.9%) in the 2025 National Bridge Inventory, as of August 20, 2026.
82 bridges (28.5%) are rated good and 189 (65.6%) fair.
The median Plymouth County bridge was built in 1962.
The busiest poor-rated bridge is St 3 NB over Water North River (built 1961), carrying about 43,207 vehicles a day.

Good 28.5% · Fair 65.6% · Poor 5.9% of 288 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 NB over Water North River	1961	43,207	Poor
St 3 SB over Water North River	1961	40,879	Poor
St 3 Nb/plgrm Hwy over Hwy Franklin St	1962	34,314	Poor
US 44 Harding St over RR Mbta/csx	1963	31,681	Poor
St 3 Sb/plgrm Hwy over Hwy Franklin St	1962	24,431	Poor
Hwy Pleasant St over St 24	1954	16,900	Poor
Hwy Fearing Hill over Water Weweantic River	1900	9,300	Poor
US 6 Wareham Road over Water Weweantic River	1929	9,017	Poor
US 6 Marion Rd over Water Weweantic River	1929	8,214	Poor
Hwy West St over St 24	1953	5,571	Poor
Hwy River St over Hwy Plimoth Plntn Hwy	1951	5,200	Poor
Hwy Pond Street over Water Satucket River	1850	2,143	Poor
Hwy Powder Pt Av over Water Duxbury Bay	1987	2,023	Poor
Hwy Walnut St over St 24	1953	1,966	Poor
Hwy Vernon St over Water Taunton River	1956	1,786	Poor
Hwy Tihonet Rd over St 25	1967	1,071	Poor
Hwy Forest St over Water Town River	1968	776	Poor

Busiest bridges in the 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
St 24 over Hwy S Elm St	1953	95,798	Fair
St 3 Pilgrim Hwy over RR Mbta	1954	89,571	Fair
St 24 NB over I 495	1979	80,302	Fair
St 3 NB Plgrm Hwy over ST228 Hingham St	1960	72,284	Fair

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.