US Bridges

Jonesville Road over Eska Creek Upper

Good

Matanuska-Susitna Borough, Alaska · Mile Point 2.3 · Structure no. 4086

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
60
2020 count
Owner
State
State Highway Agency

About this bridge

Jonesville Road over Eska Creek Upper is a steel culvert carrying Jonesville Road over Eska Creek Upper in Matanuska-Susitna Borough, Alaska. It was built in 2008, so it is 17 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 60 vehicles a day, roughly 5% of them trucks, projected to reach 80 by 2039. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesJonesville Road
CrossesEska Creek Upper
LocationMile Point 2.3
RouteState Highway 0
StateAlaska
Coordinates61.73444, -148.91417
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.6 US tons
Inventory rating28.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length20 ft (6.1 m)
Longest span20 ft (6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic80 by 2039
Trucks5%
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

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 Jonesville Road over Eska Creek Upper built?

It was built in 2008, making it 17 years old in 2025.

What condition is Jonesville Road over Eska Creek Upper 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 July 2023.

How much traffic does Jonesville Road over Eska Creek Upper carry?

About 60 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Jonesville Road over Eska Creek Upper?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6 m).

Who owns Jonesville Road over Eska Creek Upper?

It is owned by the State Highway Agency.