Juneau City and County Bridge Report Card

Juneau City and County scores 91 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A91 / 100

Local infrastructure snapshot

Juneau City and County, Alaska

Juneau City and County has 47 bridges in the National Bridge Inventory, with 1 rated poor and 1 rated scour-critical. Its poor-condition share of 2.1% is at or below the 7.5% statewide average. Poor-condition bridges carry about 200 daily vehicle crossings.

47Total Bridges

1Poor (2.1%)

29Fair (61.7%)

1Scour-Critical

Quote-Ready Local Facts

2.1%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

200daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 2.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Juneau City and County a Bridge Condition Exposure Score of 91/100 (A). The county has 47 bridges in the National Bridge Inventory, including 1 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 200 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	2.1%	4.3
Poor-condition traffic exposure	25	0.1% of measured traffic	0.1
Scour-critical bridge share	20	2.1%	4.3
Average age vs national baseline	10	48 years vs 48 nationally	0.0
Traffic-data completeness	5	244,098 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	2.1%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.1%
Average Bridge Age	48 years
Poor-Condition Traffic Exposure	200 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeAmalga Street over Jordan Creek (amalga St) — 200 vehicles/day Oldest Listed Bridge9th Street over Gold Creek Ninth ST — built in 1934 All County BridgesBrowse every bridge record in Juneau City and County.

Top Bridges to Watch in Juneau City and County

Bridge	Reason	Condition	Daily Traffic	Year Built
Amalga Street over Jordan Creek (amalga St)	Poor condition + traffic exposure	Poor	200	1982
Basin Road over Gold Creek	Scour-critical foundation rating	Fair	280	1938
Egan Drive over Jordan Creek (egan Dr)	High traffic	Fair	21,700	1971
Egan Drive over Vanderbilt Creek	High traffic	Good	17,000	1973
Egan Drive over Salmon Creek Powerhouse	High traffic	Fair	16,900	1973
Glacier Highway over Mendenhall River	High traffic	Good	15,923	2015
Egan Drive over Salmon Creek	High traffic	Fair	13,800	1973
Jnu Douglas Br RD over Gastineau Channel	High traffic	Fair	12,800	1981
Old Glacier HWY over Jordan Creek Culverts	High traffic	Fair	10,704	1983
Egan Drive over Gold Creek	High traffic	Fair	10,200	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.