Valley County Bridge Report Card

Valley County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C73 / 100

Local infrastructure snapshot

Valley County, Idaho

Valley County has 153 bridges in the National Bridge Inventory, with 10 rated poor and 7 rated scour-critical. Its poor-condition share of 6.5% is above the 5.4% statewide average. Poor-condition bridges carry about 5,460 daily vehicle crossings.

153Total Bridges

10Poor (6.5%)

71Fair (46.4%)

7Scour-Critical

Quote-Ready Local Facts

6.5%of county bridges are in poor condition, compared with 5.4% statewide and 6.7% nationally.

5,460daily vehicle crossings are on poor-condition bridges in the county.

7bridges are rated scour-critical, or 4.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Valley County a Bridge Condition Exposure Score of 73/100 (C). The county has 153 bridges in the National Bridge Inventory, including 10 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 5,460 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	6.5%	13.1
Poor-condition traffic exposure	25	6.4% of measured traffic	4.8
Scour-critical bridge share	20	4.6%	9.2
Average age vs national baseline	10	44 years vs 48 nationally	0.0
Traffic-data completeness	5	85,839 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	6.5%
State Poor-Condition Share	5.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	4.6%
Average Bridge Age	44 years
Poor-Condition Traffic Exposure	5,460 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSH 55 over Uprr;n.fk.payette River — 4,100 vehicles/day Oldest Listed BridgeLake Way over North Fork Payette River — built in 1913 All County BridgesBrowse every bridge record in Valley County.

Top Bridges to Watch in Valley County

Bridge	Reason	Condition	Daily Traffic	Year Built
Smith Ferry Drive over N.fk.payette River	Poor condition + traffic exposure	Poor	90	1959
SH 55 over Uprr;n.fk.payette River	Poor condition + traffic exposure	Poor	4,100	1933
S3944;farm To Mrkt over Willow Creek	Poor condition + traffic exposure	Poor	490	1996
Stc 3988;roseberry over Willow Creek	Poor condition + traffic exposure	Poor	370	1996
Paddy Flat Road over Boulder Creek	Poor condition + traffic exposure	Poor	230	1978
Road 50343 over Logan Creek	Poor condition + traffic exposure	Poor	50	1980
Nisula Road over Mud Creek	Poor condition + traffic exposure	Poor	50	1986
East Fork Road over S.fk.salmon River	Poor condition + traffic exposure	Poor	40	1940
Burnt Log Road over Johnson Creek	Poor condition + traffic exposure	Poor	30	1977
Elk Summit RD over South Fork Salmon River	Poor condition + traffic exposure	Poor	10	1934

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.