Chester County Bridge Report Card

Chester County scores 43 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F43 / 100

Local infrastructure snapshot

Chester County, Pennsylvania

Chester County has 682 bridges in the National Bridge Inventory, with 90 rated poor and 138 rated scour-critical. Its poor-condition share of 13.2% is above the 12.1% statewide average. Poor-condition bridges carry about 447,906 daily vehicle crossings.

682Total Bridges

90Poor (13.2%)

417Fair (61.1%)

138Scour-Critical

Quote-Ready Local Facts

13.2%of county bridges are in poor condition, compared with 12.1% statewide and 6.7% nationally.

447,906daily vehicle crossings are on poor-condition bridges in the county.

138bridges are rated scour-critical, or 20.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Chester County a Bridge Condition Exposure Score of 43/100 (F). The county has 682 bridges in the National Bridge Inventory, including 90 in poor condition and 138 rated scour-critical. Poor-condition bridges carry about 447,906 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	13.2%	26.4
Poor-condition traffic exposure	25	6.4% of measured traffic	4.8
Scour-critical bridge share	20	20.2%	20.0
Average age vs national baseline	10	62 years vs 48 nationally	5.5
Traffic-data completeness	5	6,981,586 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	13.2%
State Poor-Condition Share	12.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	20.2%
Average Bridge Age	62 years
Poor-Condition Traffic Exposure	447,906 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeRoute 30 By-pass over Creek RD Brandywine Ck. — 69,924 vehicles/day Oldest Listed BridgeOld Schuylkill RD over Pigeon Creek — built in 1804 All County BridgesBrowse every bridge record in Chester County.

Top Bridges to Watch in Chester County

Bridge	Reason	Condition	Daily Traffic	Year Built
Pennsylvania Ave. over White Clay Creek	Poor condition + traffic exposure	Poor	18,776	1927
Lancaster Avenue over East Br. Brandywine Ck.	Poor condition + traffic exposure	Poor	18,163	1921
Lincoln Highway over W Br Brandywine Creek	Poor condition + traffic exposure	Poor	16,027	1914
Downingtown Pike over Valley Creek	Poor condition + traffic exposure	Poor	12,126	1929
Street Road over Pocopson Creek	Poor condition + traffic exposure	Poor	11,166	1937
Conestoga Road over Branch Pickering Creek	Poor condition + traffic exposure	Poor	7,540	1938
Valley Road over Buck Run	Poor condition + traffic exposure	Poor	6,935	1914
Old Baltimore Pike over Br.of East Br.white Clay	Poor condition + traffic exposure	Poor	6,672	1937
Newark Road over East Branch Big Elk Crk	Poor condition + traffic exposure	Poor	5,026	1922
Kings Highway over W. Br. Brandywine Creek	Poor condition + traffic exposure	Poor	4,970	1935

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.