Mifflin County Bridge Report Card

Mifflin County scores 61 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D61 / 100

Local infrastructure snapshot

Mifflin County, Pennsylvania

Mifflin County has 196 bridges in the National Bridge Inventory, with 23 rated poor and 13 rated scour-critical. Its poor-condition share of 11.7% is at or below the 12.1% statewide average. Poor-condition bridges carry about 12,392 daily vehicle crossings.

196Total Bridges

23Poor (11.7%)

92Fair (46.9%)

13Scour-Critical

Quote-Ready Local Facts

11.7%of county bridges are in poor condition, compared with 12.1% statewide and 6.7% nationally.

12,392daily vehicle crossings are on poor-condition bridges in the county.

13bridges are rated scour-critical, or 6.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Mifflin County a Bridge Condition Exposure Score of 61/100 (D). The county has 196 bridges in the National Bridge Inventory, including 23 in poor condition and 13 rated scour-critical. Poor-condition bridges carry about 12,392 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	11.7%	23.5
Poor-condition traffic exposure	25	1.7% of measured traffic	1.3
Scour-critical bridge share	20	6.6%	13.3
Average age vs national baseline	10	51 years vs 48 nationally	1.2
Traffic-data completeness	5	709,345 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	11.7%
State Poor-Condition Share	12.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	6.6%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	12,392 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSR 3006 over Jacks Creek — 2,531 vehicles/day Oldest Listed BridgeT-458 Taylor Mill over Kishacoquillas Creek — built in 1900 All County BridgesBrowse every bridge record in Mifflin County.

Top Bridges to Watch in Mifflin County

Bridge	Reason	Condition	Daily Traffic	Year Built
T-464 over Laurel Creek	Poor condition + traffic exposure	Poor	1,000	1920
T-439 over Kishacoquillas Creek	Poor condition + traffic exposure	Poor	628	1920
T-465 over Treaster Run	Poor condition + traffic exposure	Poor	200	1915
T-383 Snook Road over Belltown Run	Poor condition + traffic exposure	Poor	161	1941
T-321 over Meadow Creek	Poor condition + traffic exposure	Poor	75	1915
Reeds Gap Road over Honey Creek	Poor condition + traffic exposure	Poor	45	1933
T-420 over Kish. Creek	Poor condition	Poor	0	1909
SR 3006 over Jacks Creek	Poor condition + traffic exposure	Poor	2,531	1965
SR 3006 over SR 8005	Poor condition + traffic exposure	Poor	1,729	1965
SR 3006 over SR 8005	Poor condition + traffic exposure	Poor	1,729	1965

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.