Strafford County Bridge Report Card

Strafford County scores 67 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D67 / 100

Local infrastructure snapshot

Strafford County, New Hampshire

Strafford County has 136 bridges in the National Bridge Inventory, with 13 rated poor and 3 rated scour-critical. Its poor-condition share of 9.6% is above the 7.5% statewide average. Poor-condition bridges carry about 135,097 daily vehicle crossings.

136Total Bridges

13Poor (9.6%)

41Fair (30.1%)

3Scour-Critical

Quote-Ready Local Facts

9.6%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

135,097daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 2.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Strafford County a Bridge Condition Exposure Score of 67/100 (D). The county has 136 bridges in the National Bridge Inventory, including 13 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 135,097 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	9.6%	19.1
Poor-condition traffic exposure	25	9.4% of measured traffic	7.0
Scour-critical bridge share	20	2.2%	4.4
Average age vs national baseline	10	55 years vs 48 nationally	2.7
Traffic-data completeness	5	1,440,019 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	9.6%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.2%
Average Bridge Age	55 years
Poor-Condition Traffic Exposure	135,097 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeNh 16 Sp Tpk SB over Cocheco River — 23,607 vehicles/day Oldest Listed BridgeNh202a over Cocheco River — built in 1883 All County BridgesBrowse every bridge record in Strafford County.

Top Bridges to Watch in Strafford County

Bridge	Reason	Condition	Daily Traffic	Year Built
Nh125 over Isinglass River	Poor condition + traffic exposure	Poor	14,407	1951
Gulf Road over Salmon Falls River	Poor condition + traffic exposure	Poor	6,132	1950
Nh 16 Sp Tpk SB over Cocheco River	Poor condition + traffic exposure	Poor	23,607	1957
Nh 16 Sp Tpk NB over Cocheco River	Poor condition + traffic exposure	Poor	22,560	1957
Nh 16 Sp Tpk NB over Nh108 Csx(abd)	Poor condition + traffic exposure	Poor	22,163	1957
Nh 16 Sp Tpk SB over Nh108 Csx(abd)	Poor condition + traffic exposure	Poor	21,323	1957
US 4 over Nh155a	Poor condition + traffic exposure	Poor	13,387	1968
Oak Street over Csx	Poor condition + traffic exposure	Poor	8,749	1890
Cocheco Road over Cocheco River	Poor condition + traffic exposure	Poor	1,773	1953
Spring Street over Cocheco River	Poor condition + traffic exposure	Poor	770	1926

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.