Knox County Bridge Report Card

Knox County scores 28 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F28 / 100

Local infrastructure snapshot

Knox County, Maine

Knox County has 54 bridges in the National Bridge Inventory, with 9 rated poor and 5 rated scour-critical. Its poor-condition share of 16.7% is above the 15.4% statewide average. Poor-condition bridges carry about 29,459 daily vehicle crossings.

54Total Bridges

9Poor (16.7%)

30Fair (55.6%)

5Scour-Critical

Quote-Ready Local Facts

16.7%of county bridges are in poor condition, compared with 15.4% statewide and 6.7% nationally.

29,459daily vehicle crossings are on poor-condition bridges in the county.

5bridges are rated scour-critical, or 9.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Knox County a Bridge Condition Exposure Score of 28/100 (F). The county has 54 bridges in the National Bridge Inventory, including 9 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 29,459 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	16.7%	33.3
Poor-condition traffic exposure	25	23.5% of measured traffic	17.6
Scour-critical bridge share	20	9.3%	18.5
Average age vs national baseline	10	55 years vs 48 nationally	2.7
Traffic-data completeness	5	125,410 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	16.7%
State Poor-Condition Share	15.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	9.3%
Average Bridge Age	55 years
Poor-Condition Traffic Exposure	29,459 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeMain ST over Megunticook River — 11,473 vehicles/day Oldest Listed BridgeFitch RD over ST George River — built in 1920 All County BridgesBrowse every bridge record in Knox County.

Top Bridges to Watch in Knox County

Bridge	Reason	Condition	Daily Traffic	Year Built
Rawson Av over Megunticook River	Poor condition + traffic exposure	Poor	830	1935
Main ST over Megunticook River	Poor condition + traffic exposure	Poor	11,473	1931
Heald HWY over ST George River	Poor condition + traffic exposure	Poor	6,940	1960
Pascal Av over Goose River	Poor condition + traffic exposure	Poor	4,760	1951
Western RD over Fuller Brook	Poor condition + traffic exposure	Poor	2,150	1947
Knowlton ST over Megunticook River	Poor condition + traffic exposure	Poor	1,920	1935
Main ST over Saint George River	Poor condition + traffic exposure	Poor	846	1939
Razorville RD over Jackson Str. (davis Str.	Poor condition + traffic exposure	Poor	340	1947
Payson RD over Mill Stream	Poor condition + traffic exposure	Poor	200	1929
Main ST over Mill Stream	Scour-critical foundation rating	Fair	4,273	1959

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.