US Bridges

Lampkin Range RD over Branch Delta River

Fair

Fairbanks North Star Borough, Alaska · 3.1 KM SW of XBRIE2 · Structure no. DAPPACDTABRIDV2

Built
1962
63 years old, rebuilt 2012
Condition
Fair
inspected August 2023
Type
Other
Steel
Length
53 ft
1 main span
Daily traffic
25
2015 count
Owner
Federal
Army

About this bridge

Lampkin Range RD over Branch Delta River is a steel other carrying Lampkin Range RD over Branch Delta River in Fairbanks North Star Borough, Alaska. It was built in 1962 and reconstructed in 2012, so it is 63 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 25 vehicles a day, roughly 90% of them trucks, projected to reach 35 by 2044. The structure is 53 ft (16.3 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLampkin Range RD
CrossesBranch Delta River
Location3.1 KM SW of XBRIE2
StateAlaska
Coordinates63.94527, -145.8041
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length53 ft (16.3 m)
Longest span41 ft (12.6 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2015)
Projected traffic35 by 2044
Trucks90%
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

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$42,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lampkin Range RD over Branch Delta River built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2012.

What condition is Lampkin Range RD over Branch Delta River 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 August 2023.

How much traffic does Lampkin Range RD over Branch Delta River carry?

About 25 vehicles per day (2015 count), of which roughly 90% are trucks.

How long is Lampkin Range RD over Branch Delta River?

The structure is 53 ft (16.3 m) long with a longest span of 41 ft (12.6 m) and a deck 21 ft wide.

Who owns Lampkin Range RD over Branch Delta River?

It is owned by the Army.