Sioux County Bridge Report Card

Sioux County scores 92 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A92 / 100

Local infrastructure snapshot

Sioux County, Nebraska

Sioux County has 36 bridges in the National Bridge Inventory, with 1 rated poor and 0 rated scour-critical. Its poor-condition share of 2.8% is at or below the 7.5% statewide average. Poor-condition bridges carry about 15 daily vehicle crossings.

36Total Bridges

1Poor (2.8%)

14Fair (38.9%)

0Scour-Critical

Quote-Ready Local Facts

2.8%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

15daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Sioux County a Bridge Condition Exposure Score of 92/100 (A). The county has 36 bridges in the National Bridge Inventory, including 1 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 15 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	2.8%	5.6
Poor-condition traffic exposure	25	0.4% of measured traffic	0.3
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	53 years vs 48 nationally	2.1
Traffic-data completeness	5	3,984 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	2.8%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	53 years
Poor-Condition Traffic Exposure	15 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCounty Highway over Hat Creek — 15 vehicles/day Oldest Listed BridgeCounty Highway over Interstate Canal — built in 1908 All County BridgesBrowse every bridge record in Sioux County.

Top Bridges to Watch in Sioux County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Highway over Hat Creek	Poor condition + traffic exposure	Poor	15	1935
N71 over Wind Spring Draw	High traffic	Good	745	1982
Us20 over Stream	High traffic	Good	615	1940
N29 over Stream	High traffic	Good	265	1952
N29 over Stream	High traffic	Good	265	1952
N29 over Stream	High traffic	Good	265	1952
N29 over Stream	High traffic	Good	240	1963
N29 over Interstate Canal	High traffic	Good	240	1973
N29 over Niobrara River	High traffic	Good	205	2006
Fas 1105 over Stream	High traffic	Good	150	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.