US Bridges

Vallenar Bay 3000 over Micro Creek

Good

Ketchikan Gateway Borough, Alaska · Mile Point 0.8 · Structure no. 2359

Built
2018
7 years old
Condition
Good
inspected June 2023
Type
Girder and Floorbeam System
Steel
Length
40 ft
1 main span
Daily traffic
10
2019 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Vallenar Bay 3000 over Micro Creek is a steel girder and floorbeam system carrying Vallenar Bay 3000 over Micro Creek in Ketchikan Gateway Borough, Alaska. It was built in 2018, so it is 7 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 50% of them trucks, projected to reach 12 by 2035. The structure is 40 ft (12.2 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesVallenar Bay 3000
CrossesMicro Creek
LocationMile Point 0.8
RouteState Lands Road 0
CountyKetchikan Gateway Borough
StateAlaska
Coordinates55.37108, -131.82683
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating37.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckWood or timber
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2019)
Projected traffic12 by 2035
Trucks50%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Vallenar Bay 3000 over Micro Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Vallenar Bay 3000 over Micro Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Vallenar Bay 3000 over Micro Creek carry?

About 10 vehicles per day (2019 count), of which roughly 50% are trucks.

How long is Vallenar Bay 3000 over Micro Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 16 ft wide.

Who owns Vallenar Bay 3000 over Micro Creek?

It is owned by the State Park, Forest, or Reservation Agency.