US Bridges

Marine HWY Route over Seldovia City Dock

Fair

Kenai Peninsula Borough, Alaska · Seldovia · Structure no. 1423

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Slab
Steel
Length
324 ft
10 main spans
Daily traffic
60
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marine HWY Route over Seldovia City Dock is a steel slab carrying Marine HWY Route over Seldovia City Dock in Kenai Peninsula Borough, Alaska. It was built in 1967, so it is 58 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 60 vehicles a day, roughly 6% of them trucks, projected to reach 70 by 2039. The structure is 324 ft (98.8 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesMarine HWY Route
CrossesSeldovia City Dock
LocationSeldovia
RouteState Highway 434
CountyKenai Peninsula Borough
StateAlaska
Coordinates59.44058, -151.72066
Functional classRural Major 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.5 US tons
Inventory rating39.6 US tons

Structure

Structure typeSlab
MaterialSteel
DeckConcrete, precast panels
Main spans10 (+2 approach)
Design loadHS 20
Structure length324 ft (98.8 m)
Longest span100 ft (30.5 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic70 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a toll road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Marine HWY Route over Seldovia City Dock built?

It was built in 1967, making it 58 years old in 2025.

What condition is Marine HWY Route over Seldovia City Dock 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 July 2024.

How much traffic does Marine HWY Route over Seldovia City Dock carry?

About 60 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Marine HWY Route over Seldovia City Dock?

The structure is 324 ft (98.8 m) long with a longest span of 100 ft (30.5 m) and a deck 26 ft wide.

Who owns Marine HWY Route over Seldovia City Dock?

It is owned by the City or Municipal Highway Agency.