US Bridges

Petersville Road over Peters Creek

Fair

Matanuska-Susitna Borough, Alaska · Mile Point 32.9 · Structure no. 0815

Built
1938
87 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
58 ft
1 main span
Daily traffic
100
2020 count
Owner
State
State Highway Agency

About this bridge

Petersville Road over Peters Creek is a steel stringer/multi-beam or girder carrying Petersville Road over Peters Creek in Matanuska-Susitna Borough, Alaska. It was built in 1938, so it is 87 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 6 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 100 vehicles a day, roughly 4% of them trucks, projected to reach 160 by 2039. The structure is 58 ft (17.6 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPetersville Road
CrossesPeters Creek
LocationMile Point 32.9
RouteState Highway 584
CountyMatanuska-Susitna Borough
StateAlaska
Coordinates62.53212, -150.81656
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36.7 US tons
Inventory rating27.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 15
Structure length58 ft (17.6 m)
Longest span55 ft (16.7 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic160 by 2039
Trucks4%
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 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 Petersville Road over Peters Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is Petersville Road over Peters 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 2024.

How much traffic does Petersville Road over Peters Creek carry?

About 100 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Petersville Road over Peters Creek?

The structure is 58 ft (17.6 m) long with a longest span of 55 ft (16.7 m) and a deck 14 ft wide.

Who owns Petersville Road over Peters Creek?

It is owned by the State Highway Agency.