US Bridges

North Douglas HWY over Fish Creek

Fair

Juneau City and Borough, Alaska · Mile Point 7.3 · Structure no. 0353

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
146 ft
3 main spans
Daily traffic
740
2020 count
Owner
State
State Highway Agency

About this bridge

North Douglas HWY over Fish Creek is a steel continuous stringer/multi-beam or girder carrying North Douglas HWY over Fish Creek in Juneau City and Borough, Alaska. It was built in 1950, so it is 75 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 740 vehicles a day, roughly 1% of them trucks, projected to reach 1,530 by 2039. The structure is 146 ft (44.5 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNorth Douglas HWY
CrossesFish Creek
LocationMile Point 7.3
RouteState Highway 959
CountyJuneau City and Borough
StateAlaska
Coordinates58.33056, -134.59278
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating27.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length146 ft (44.5 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic740 (2020)
Projected traffic1,530 by 2039
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was North Douglas HWY over Fish Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is North Douglas HWY over Fish Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does North Douglas HWY over Fish Creek carry?

About 740 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is North Douglas HWY over Fish Creek?

The structure is 146 ft (44.5 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns North Douglas HWY over Fish Creek?

It is owned by the State Highway Agency.