Fall River County Bridge Report Card

Fall River County scores 82 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B82 / 100

Local infrastructure snapshot

Fall River County, South Dakota

Fall River County has 80 bridges in the National Bridge Inventory, with 5 rated poor and 2 rated scour-critical. Its poor-condition share of 6.2% is at or below the 16.1% statewide average. Poor-condition bridges carry about 710 daily vehicle crossings.

80Total Bridges

5Poor (6.2%)

34Fair (42.5%)

2Scour-Critical

Quote-Ready Local Facts

6.2%of county bridges are in poor condition, compared with 16.1% statewide and 6.7% nationally.

710daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 2.5% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Fall River County a Bridge Condition Exposure Score of 82/100 (B). The county has 80 bridges in the National Bridge Inventory, including 5 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 710 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	6.2%	12.5
Poor-condition traffic exposure	25	0.9% of measured traffic	0.7
Scour-critical bridge share	20	2.5%	5.0
Average age vs national baseline	10	43 years vs 48 nationally	0.0
Traffic-data completeness	5	76,539 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	6.2%
State Poor-Condition Share	16.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.5%
Average Bridge Age	43 years
Poor-Condition Traffic Exposure	710 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeMinnekahta Avenue over Fall Rv — 588 vehicles/day Oldest Listed BridgeScenic Road over Cheyenne Rv — built in 1930 All County BridgesBrowse every bridge record in Fall River County.

Top Bridges to Watch in Fall River County

Bridge	Reason	Condition	Daily Traffic	Year Built
Minnekahta Avenue over Fall Rv	Poor condition + traffic exposure	Poor	588	1934
Scenic Road over Cheyenne Rv	Poor condition + traffic exposure	Poor	41	1930
County RD over Fall Rv	Poor condition + traffic exposure	Poor	41	1932
Igloo RD over Coal Ck	Poor condition + traffic exposure	Poor	20	1940
County RD (sd 298) over Burlington Northern Rr	Poor condition + traffic exposure	Poor	20	1945
Us385 over Horsehead Ck	Scour-critical foundation rating	Fair	673	1963
Buffalo Gap Road over Cheyenne Rv	Scour-critical foundation rating	Fair	128	1964
Us018 over Fall Rv	High traffic	Fair	5,064	2010
Us018 over Fall Rv	High traffic	Fair	5,064	2010
Us018 over Ck	High traffic	Fair	4,913	1968

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.