Matanuska-Susitna County Bridge Report Card

Matanuska-Susitna County scores 70 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C70 / 100

Local infrastructure snapshot

Matanuska-Susitna County, Alaska

Matanuska-Susitna County has 121 bridges in the National Bridge Inventory, with 8 rated poor and 10 rated scour-critical. Its poor-condition share of 6.6% is at or below the 7.5% statewide average. Poor-condition bridges carry about 1,410 daily vehicle crossings.

121Total Bridges

8Poor (6.6%)

53Fair (43.8%)

10Scour-Critical

Quote-Ready Local Facts

6.6%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

1,410daily vehicle crossings are on poor-condition bridges in the county.

10bridges are rated scour-critical, or 8.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Matanuska-Susitna County a Bridge Condition Exposure Score of 70/100 (C). The county has 121 bridges in the National Bridge Inventory, including 8 in poor condition and 10 rated scour-critical. Poor-condition bridges carry about 1,410 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	6.6%	13.2
Poor-condition traffic exposure	25	0.4% of measured traffic	0.3
Scour-critical bridge share	20	8.3%	16.5
Average age vs national baseline	10	32 years vs 48 nationally	0.0
Traffic-data completeness	5	329,834 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	6.6%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	8.3%
Average Bridge Age	32 years
Poor-Condition Traffic Exposure	1,410 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeParks Highway over Hardage Creek — 940 vehicles/day Oldest Listed BridgeCollinsville Trail over Peters Creek — built in 1938 All County BridgesBrowse every bridge record in Matanuska-Susitna County.

Top Bridges to Watch in Matanuska-Susitna County

Bridge	Reason	Condition	Daily Traffic	Year Built
Petersville Road over Moose Creek	Poor condition + traffic exposure	Poor	160	1974
Denali Highway over Susitna River	Poor condition + traffic exposure	Poor	60	1956
Parks Highway over Hardage Creek	Poor condition + traffic exposure	Poor	940	1971
Willow/fishhook RD over Willow Creek	Poor condition + traffic exposure	Poor	190	1975
Back Acres Road over Bodenburg Creek	Poor condition + traffic exposure	Poor	30	2002
Grubstake-hatchers over Willow Creek	Poor condition + traffic exposure	Poor	10	1945
Oil Well Road over Moose Creek	Poor condition + traffic exposure	Poor	10	1998
Elk Road over Bodenburg Creek	Poor condition + traffic exposure	Poor	10	2002
Parks Highway over Chulitna River	Scour-critical foundation rating	Fair	1,120	1970
Parks Highway over East Fork Chulitna River	Scour-critical foundation rating	Fair	900	1967

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.