Northumberland County Bridge Report Card

Northumberland 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

Northumberland County, Pennsylvania

Northumberland County has 298 bridges in the National Bridge Inventory, with 20 rated poor and 31 rated scour-critical. Its poor-condition share of 6.7% is at or below the 12.1% statewide average. Poor-condition bridges carry about 14,437 daily vehicle crossings.

298Total Bridges

20Poor (6.7%)

151Fair (50.7%)

31Scour-Critical

Quote-Ready Local Facts

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

14,437daily vehicle crossings are on poor-condition bridges in the county.

31bridges are rated scour-critical, or 10.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Northumberland County a Bridge Condition Exposure Score of 60/100 (D). The county has 298 bridges in the National Bridge Inventory, including 20 in poor condition and 31 rated scour-critical. Poor-condition bridges carry about 14,437 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	6.7%	13.4
Poor-condition traffic exposure	25	1.6% of measured traffic	1.2
Scour-critical bridge share	20	10.4%	20.0
Average age vs national baseline	10	62 years vs 48 nationally	5.7
Traffic-data completeness	5	919,101 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	6.7%
State Poor-Condition Share	12.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	10.4%
Average Bridge Age	62 years
Poor-Condition Traffic Exposure	14,437 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeW Walnut ST over Shamokin Creek — 8,400 vehicles/day Oldest Listed BridgeRishel Cov. Brdg. over Chillisquaque Creek — built in 1830 All County BridgesBrowse every bridge record in Northumberland County.

Top Bridges to Watch in Northumberland County

Bridge	Reason	Condition	Daily Traffic	Year Built
T-364 Turbot Twp. over Over Muddy Run	Poor condition + traffic exposure	Poor	150	1949
T-594 over Chillisquaque Creek	Poor condition + traffic exposure	Poor	100	1881
T-764 Tulip Road over Trib. Shamokin Creek	Poor condition + traffic exposure	Poor	100	1930
Hollow Road over Schwaben Creek	Poor condition + traffic exposure	Poor	25	1897
T-672 over Glade Run	Poor condition	Poor	0	1904
W Walnut ST over Shamokin Creek	Poor condition + traffic exposure	Poor	8,400	1914
SR 890 over Little Shamokin Creek	Poor condition + traffic exposure	Poor	2,336	1949
Warrior Run Blvd. over Warrior Run	Poor condition + traffic exposure	Poor	1,200	1920
Willow Street over Shamokin Creek	Poor condition + traffic exposure	Poor	600	1906
T-506 (8th Street) over Zerbe Run	Poor condition + traffic exposure	Poor	400	1904

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.