US Bridges

Oil Well Road over Moose Creek

Poor

Matanuska-Susitna Borough, Alaska · Mile Point 9.5 · Structure no. 1985

Built
1998
27 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
1 main span
Daily traffic
10
2018 count
Owner
County
County Highway Agency

About this bridge

Oil Well Road over Moose Creek is a steel stringer/multi-beam or girder carrying Oil Well Road over Moose Creek in Matanuska-Susitna Borough, Alaska. It was built in 1998, so it is 27 years old, younger than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10 vehicles a day, roughly 1% of them trucks, projected to reach 13 by 2035. The structure is 64 ft (19.5 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesOil Well Road
CrossesMoose Creek
LocationMile Point 9.5
StateAlaska
Coordinates62.22885, -150.44349
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.7 US tons
Inventory rating38.8 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span62 ft (18.9 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic13 by 2035
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

OwnerCounty Highway Agency
Maintained byCounty 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 Oil Well Road over Moose Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Oil Well Road over Moose Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Oil Well Road over Moose Creek carry?

About 10 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Oil Well Road over Moose Creek?

The structure is 64 ft (19.5 m) long with a longest span of 62 ft (18.9 m) and a deck 36 ft wide.

Who owns Oil Well Road over Moose Creek?

It is owned by the County Highway Agency.