US Bridges

Glenn HWY Spur over Little Nelchina River

Fair

County 066, Alaska · MP 137.6 Ak State Div Pks · Structure no. 0549

Built
1952
73 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
183 ft
3 main spans
Daily traffic
765
2018 count
Owner
State
State Highway Agency

About this bridge

Glenn HWY Spur over Little Nelchina River is a steel stringer/multi-beam or girder carrying Glenn HWY Spur over Little Nelchina River in County 066, Alaska. It was built in 1952, so it is 73 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 765 vehicles a day, roughly 1% of them trucks, projected to reach 918 by 2035. The structure is 183 ft (55.8 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesGlenn HWY Spur
CrossesLittle Nelchina River
LocationMP 137.6 Ak State Div Pks
RouteState Highway NSPCG
StateAlaska
Coordinates61.9892, -146.9463
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.4 US tons
Inventory rating26.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length183 ft (55.8 m)
Longest span59 ft (18 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic765 (2018)
Projected traffic918 by 2035
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Glenn HWY Spur over Little Nelchina River built?

It was built in 1952, making it 73 years old in 2025.

What condition is Glenn HWY Spur over Little Nelchina 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 July 2023.

How much traffic does Glenn HWY Spur over Little Nelchina River carry?

About 765 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Glenn HWY Spur over Little Nelchina River?

The structure is 183 ft (55.8 m) long with a longest span of 59 ft (18 m) and a deck 26 ft wide.

Who owns Glenn HWY Spur over Little Nelchina River?

It is owned by the State Highway Agency.