Blair County Bridge Report Card

Blair County scores 60 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D60 / 100

Local infrastructure snapshot

Blair County, Pennsylvania

Blair County has 338 bridges in the National Bridge Inventory, with 39 rated poor and 24 rated scour-critical. Its poor-condition share of 11.5% is at or below the 12.1% statewide average. Poor-condition bridges carry about 45,814 daily vehicle crossings.

338Total Bridges

39Poor (11.5%)

176Fair (52.1%)

24Scour-Critical

Quote-Ready Local Facts

11.5%of county bridges are in poor condition, compared with 12.1% statewide and 6.7% nationally.

45,814daily vehicle crossings are on poor-condition bridges in the county.

24bridges are rated scour-critical, or 7.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Blair County a Bridge Condition Exposure Score of 60/100 (D). The county has 338 bridges in the National Bridge Inventory, including 39 in poor condition and 24 rated scour-critical. Poor-condition bridges carry about 45,814 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	11.5%	23.1
Poor-condition traffic exposure	25	3.0% of measured traffic	2.3
Scour-critical bridge share	20	7.1%	14.2
Average age vs national baseline	10	49 years vs 48 nationally	0.6
Traffic-data completeness	5	1,502,175 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	11.5%
State Poor-Condition Share	12.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	7.1%
Average Bridge Age	49 years
Poor-Condition Traffic Exposure	45,814 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeT473 N. Eighth ST over Norfolk Southern Rr — 10,200 vehicles/day Oldest Listed BridgeT512 Irish Flats L over Little Juniata River — built in 1898 All County BridgesBrowse every bridge record in Blair County.

Top Bridges to Watch in Blair County

Bridge	Reason	Condition	Daily Traffic	Year Built
Co RD 101 Bedfrd S over South Dry Run	Poor condition + traffic exposure	Poor	1,634	1913
16th Street over Blair Gap Run	Poor condition + traffic exposure	Poor	1,514	1925
T-397 Biddle Road over Clover Creek	Poor condition + traffic exposure	Poor	667	1908
SR 3008(lobstor) over Polecat Run	Poor condition + traffic exposure	Poor	492	1973
T-349 Mountain RD over Frtown.br.juniata River	Poor condition + traffic exposure	Poor	451	1954
T352 Butler Hlw RD over Trib. Of South Dry Run	Poor condition + traffic exposure	Poor	253	1957
T378 Lwr Piney Crk over Piney Creek	Poor condition + traffic exposure	Poor	219	1909
T426 Spencer Crk D over Spencer Run	Poor condition + traffic exposure	Poor	204	1946
T-525 Helsel Road over Smoky Run	Poor condition + traffic exposure	Poor	46	1920
T-328 Creps Road over Clover Creek	Poor condition + traffic exposure	Poor	44	1912

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.