Coos County Bridge Report Card

Coos County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C73 / 100

Local infrastructure snapshot

Coos County, New Hampshire

Coos County has 189 bridges in the National Bridge Inventory, with 10 rated poor and 9 rated scour-critical. Its poor-condition share of 5.3% is at or below the 7.5% statewide average. Poor-condition bridges carry about 5,690 daily vehicle crossings.

189Total Bridges

10Poor (5.3%)

86Fair (45.5%)

9Scour-Critical

Quote-Ready Local Facts

5.3%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

5,690daily vehicle crossings are on poor-condition bridges in the county.

9bridges are rated scour-critical, or 4.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Coos County a Bridge Condition Exposure Score of 73/100 (C). The county has 189 bridges in the National Bridge Inventory, including 10 in poor condition and 9 rated scour-critical. Poor-condition bridges carry about 5,690 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	5.3%	10.6
Poor-condition traffic exposure	25	2.0% of measured traffic	1.5
Scour-critical bridge share	20	4.8%	9.5
Average age vs national baseline	10	61 years vs 48 nationally	5.4
Traffic-data completeness	5	284,903 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	5.3%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	4.8%
Average Bridge Age	61 years
Poor-Condition Traffic Exposure	5,690 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 2 over Pea Brook — 4,334 vehicles/day Oldest Listed BridgeHill Road over Perry Stream — built in 1860 All County BridgesBrowse every bridge record in Coos County.

Top Bridges to Watch in Coos County

Bridge	Reason	Condition	Daily Traffic	Year Built
Stearns Brook Road over Stearns Brook	Poor condition + traffic exposure	Poor	96	1950
Village Road over Clement Brook	Poor condition + traffic exposure	Poor	44	1929
US 2 over Pea Brook	Poor condition + traffic exposure	Poor	4,334	1932
Carleton Hill Road over Mohawk River	Poor condition + traffic exposure	Poor	451	1935
North Road over Androscoggin River	Poor condition + traffic exposure	Poor	281	1900
Hill Road over Perry Stream	Poor condition + traffic exposure	Poor	191	1860
Murphy Dam Road over Dam Spillway	Poor condition + traffic exposure	Poor	96	1938
Leighton Meadow RD over Phillips Brook	Poor condition + traffic exposure	Poor	96	1940
Chickwolnepy Road over Chickwolnepy Stream	Poor condition + traffic exposure	Poor	96	1950
Old Nh 16 over Thompson Brook	Poor condition + traffic exposure	Poor	5	1931

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.