US Bridges

Plumley Road over Bodenburg Creek

Fair

Matanuska-Susitna Borough, Alaska · Mile Point 0.6 · Structure no. 1201

Built
1980
45 years old
Condition
Fair
inspected June 2024
Type
Slab
Wood or Timber
Length
23 ft
1 main span
Daily traffic
660
2020 count
Owner
State
State Highway Agency

About this bridge

Plumley Road over Bodenburg Creek is a wood or timber slab carrying Plumley Road over Bodenburg Creek in Matanuska-Susitna Borough, Alaska. It was built in 1980, so it is 45 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 660 vehicles a day, roughly 7% of them trucks, projected to reach 770 by 2039. The structure is 23 ft (6.9 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesPlumley Road
CrossesBodenburg Creek
LocationMile Point 0.6
RouteState Highway NSP00
StateAlaska
Coordinates61.54161, -149.01756
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.1 US tons
Inventory rating52.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span21 ft (6.4 m)
Deck width37 ft (11.4 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2020)
Projected traffic770 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Plumley Road over Bodenburg Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Plumley Road over Bodenburg 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 Plumley Road over Bodenburg Creek carry?

About 660 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Plumley Road over Bodenburg Creek?

The structure is 23 ft (6.9 m) long with a longest span of 21 ft (6.4 m) and a deck 37 ft wide.

Who owns Plumley Road over Bodenburg Creek?

It is owned by the State Highway Agency.