McCone County Bridge Report Card

McCone County scores 54 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F54 / 100

Local infrastructure snapshot

McCone County, Montana

McCone County has 43 bridges in the National Bridge Inventory, with 4 rated poor and 3 rated scour-critical. Its poor-condition share of 9.3% is above the 7.4% statewide average. Poor-condition bridges carry about 2,460 daily vehicle crossings.

43Total Bridges

4Poor (9.3%)

34Fair (79.1%)

3Scour-Critical

Quote-Ready Local Facts

9.3%of county bridges are in poor condition, compared with 7.4% statewide and 6.7% nationally.

2,460daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 7.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives McCone County a Bridge Condition Exposure Score of 54/100 (F). The county has 43 bridges in the National Bridge Inventory, including 4 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 2,460 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	9.3%	18.6
Poor-condition traffic exposure	25	12.1% of measured traffic	9.1
Scour-critical bridge share	20	7.0%	14.0
Average age vs national baseline	10	58 years vs 48 nationally	4.2
Traffic-data completeness	5	20,258 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	9.3%
State Poor-Condition Share	7.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	7.0%
Average Bridge Age	58 years
Poor-Condition Traffic Exposure	2,460 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeS 200 over Cemetery Coulee — 680 vehicles/day Oldest Listed BridgeS 200 over Redwater River — built in 1933 All County BridgesBrowse every bridge record in McCone County.

Top Bridges to Watch in McCone County

Bridge	Reason	Condition	Daily Traffic	Year Built
S 200 over Cemetery Coulee	Poor condition + traffic exposure	Poor	680	1939
S 200 over Drainage	Poor condition + traffic exposure	Poor	680	1939
S 200 over Drainage	Poor condition + traffic exposure	Poor	680	1939
S 253 over Redwater River	Poor condition + traffic exposure	Poor	420	1950
S 24 over Timber Creek	Scour-critical foundation rating	Fair	153	1960
Weldon RD over Shade Creek 019	Scour-critical foundation rating	Fair	100	1970
S 528 over Prairie Elk Creek 021	Scour-critical foundation rating	Fair	76	1972
S 200 over Redwater River	High traffic	Fair	1,263	1933
IRR - S 13 over Drainage	High traffic	Fair	985	1995
IRR - S 13 over Drainage-stockpass	High traffic	Good	985	1995

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.