Polk County Bridge Report Card

Polk County scores 56 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F56 / 100

Local infrastructure snapshot

Polk County, Nebraska

Polk County has 93 bridges in the National Bridge Inventory, with 10 rated poor and 15 rated scour-critical. Its poor-condition share of 10.8% is above the 7.5% statewide average. Poor-condition bridges carry about 455 daily vehicle crossings.

93Total Bridges

10Poor (10.8%)

29Fair (31.2%)

15Scour-Critical

Quote-Ready Local Facts

10.8%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

455daily vehicle crossings are on poor-condition bridges in the county.

15bridges are rated scour-critical, or 16.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Polk County a Bridge Condition Exposure Score of 56/100 (F). The county has 93 bridges in the National Bridge Inventory, including 10 in poor condition and 15 rated scour-critical. Poor-condition bridges carry about 455 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	10.8%	21.5
Poor-condition traffic exposure	25	1.3% of measured traffic	0.9
Scour-critical bridge share	20	16.1%	20.0
Average age vs national baseline	10	51 years vs 48 nationally	1.2
Traffic-data completeness	5	36,010 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	10.8%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	16.1%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	455 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCounty Highway over N Br Big Blue River — 70 vehicles/day Oldest Listed BridgeCounty Highway over S Ch Platte River — built in 1920 All County BridgesBrowse every bridge record in Polk County.

Top Bridges to Watch in Polk County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Highway over N Br Big Blue River	Poor condition + traffic exposure	Poor	70	1940
County Highway over S Ch Platte River	Poor condition + traffic exposure	Poor	65	1920
County Highway over Clear Creek	Poor condition + traffic exposure	Poor	65	1935
County Highway over N Br Big Blue River	Poor condition + traffic exposure	Poor	50	1950
County Highway over N Br Big Blue River	Poor condition + traffic exposure	Poor	50	1950
County Highway over Stream	Poor condition + traffic exposure	Poor	50	1983
County Highway over N Br Big Blue River	Poor condition + traffic exposure	Poor	30	1950
County Highway over N Br Big Blue River	Poor condition + traffic exposure	Poor	25	1935
County Road G over N Br Big Blue River	Poor condition + traffic exposure	Poor	25	1935
County Highway over Clear Creek	Poor condition + traffic exposure	Poor	25	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.