Pondera County Bridge Report Card

Pondera County scores 81 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B81 / 100

Local infrastructure snapshot

Pondera County, Montana

Pondera County has 96 bridges in the National Bridge Inventory, with 4 rated poor and 3 rated scour-critical. Its poor-condition share of 4.2% is at or below the 7.4% statewide average. Poor-condition bridges carry about 1,811 daily vehicle crossings.

96Total Bridges

4Poor (4.2%)

43Fair (44.8%)

3Scour-Critical

Quote-Ready Local Facts

4.2%of county bridges are in poor condition, compared with 7.4% statewide and 6.7% nationally.

1,811daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 3.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Pondera County a Bridge Condition Exposure Score of 81/100 (B). The county has 96 bridges in the National Bridge Inventory, including 4 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 1,811 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	4.2%	8.3
Poor-condition traffic exposure	25	4.4% of measured traffic	3.3
Scour-critical bridge share	20	3.1%	6.2
Average age vs national baseline	10	51 years vs 48 nationally	1.2
Traffic-data completeness	5	41,174 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	4.2%
State Poor-Condition Share	7.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.1%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	1,811 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIRR - US 89 over Blacktail Creek — 1,012 vehicles/day Oldest Listed BridgeUS HWY 91 N over Dry Fork Marias 080 — built in 1931 All County BridgesBrowse every bridge record in Pondera County.

Top Bridges to Watch in Pondera County

Bridge	Reason	Condition	Daily Traffic	Year Built
IRR - US 89 over Blacktail Creek	Poor condition + traffic exposure	Poor	1,012	1965
S 21 over Int Midway I 15	Poor condition + traffic exposure	Poor	540	1972
IRR - S 358 over Two Medicine River	Poor condition + traffic exposure	Poor	243	1968
Sollid RD over Drainage	Poor condition + traffic exposure	Poor	16	1973
US HWY 91 N over Dry Fork Marias 080	Scour-critical foundation rating	Fair	511	1931
Dupuyer Creek RD over Dupuyer Creek 067	Scour-critical foundation rating	Fair	100	1938
Stoltz RD over Birch Creek 001	Scour-critical foundation rating	Fair	100	1976
I 15 over S Pondera Coulee	High traffic	Fair	3,248	1964
I 15 over Rr	High traffic	Good	1,727	1972
I 15 over Rr	High traffic	Good	1,727	1972

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.