Plymouth County Bridge Report Card

Plymouth County scores 74 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C74 / 100

Local infrastructure snapshot

Plymouth County, Massachusetts

Plymouth County has 288 bridges in the National Bridge Inventory, with 17 rated poor and 5 rated scour-critical. Its poor-condition share of 5.9% is at or below the 9.4% statewide average. Poor-condition bridges carry about 238,479 daily vehicle crossings.

288Total Bridges

17Poor (5.9%)

189Fair (65.6%)

5Scour-Critical

Quote-Ready Local Facts

5.9%of county bridges are in poor condition, compared with 9.4% statewide and 6.7% nationally.

238,479daily vehicle crossings are on poor-condition bridges in the county.

5bridges are rated scour-critical, or 1.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Plymouth County a Bridge Condition Exposure Score of 74/100 (C). The county has 288 bridges in the National Bridge Inventory, including 17 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 238,479 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	5.9%	11.8
Poor-condition traffic exposure	25	4.5% of measured traffic	3.4
Scour-critical bridge share	20	1.7%	3.5
Average age vs national baseline	10	65 years vs 48 nationally	7.0
Traffic-data completeness	5	5,256,679 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	5.9%
State Poor-Condition Share	9.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.7%
Average Bridge Age	65 years
Poor-Condition Traffic Exposure	238,479 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeST 3 NB over Water North River — 43,207 vehicles/day Oldest Listed BridgeHWY Titicut ST over Water Taunton River — built in 1850 All County BridgesBrowse every bridge record in Plymouth County.

Top Bridges to Watch in Plymouth County

Bridge	Reason	Condition	Daily Traffic	Year Built
US 6 Wareham Road over Water Weweantic River	Poor condition + traffic exposure	Poor	9,017	1929
US 6 Marion RD over Water Weweantic River	Poor condition + traffic exposure	Poor	8,214	1929
ST 3 NB over Water North River	Poor condition + traffic exposure	Poor	43,207	1961
ST 3 SB over Water North River	Poor condition + traffic exposure	Poor	40,879	1961
ST 3 Nb/plgrm HWY over HWY Franklin ST	Poor condition + traffic exposure	Poor	34,314	1962
US 44 Harding ST over Rr Mbta/csx	Poor condition + traffic exposure	Poor	31,681	1963
ST 3 Sb/plgrm HWY over HWY Franklin ST	Poor condition + traffic exposure	Poor	24,431	1962
HWY Pleasant ST over ST 24	Poor condition + traffic exposure	Poor	16,900	1954
HWY Fearing Hill over Water Weweantic River	Poor condition + traffic exposure	Poor	9,300	1900
HWY West ST over ST 24	Poor condition + traffic exposure	Poor	5,571	1953

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.