US Bridges

Old Glenn Palmer over Old Glenn HWY Overhead

Good

Anchorage Municipality, Alaska · Mile Point 0.5 · Structure no. 1884

Built
1994
31 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
132 ft
1 main span
Daily traffic
1,710
2020 count
Owner
State
State Highway Agency

About this bridge

Old Glenn Palmer over Old Glenn HWY Overhead is a prestressed concrete tee beam carrying Old Glenn Palmer over Old Glenn HWY Overhead in Anchorage Municipality, Alaska. It was built in 1994, so it is 31 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,710 vehicles a day, roughly 8% of them trucks, projected to reach 2,230 by 2039. The structure is 132 ft (40.3 m) long and 43 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

CarriesOld Glenn Palmer
CrossesOld Glenn HWY Overhead
LocationMile Point 0.5
RouteState Highway 0S576
StateAlaska
Coordinates61.47195, -149.25553
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.5 US tons
Inventory rating43.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length132 ft (40.3 m)
Longest span126 ft (38.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,710 (2020)
Projected traffic2,230 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed32.9 mi (53 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old Glenn Palmer over Old Glenn HWY Overhead built?

It was built in 1994, making it 31 years old in 2025.

What condition is Old Glenn Palmer over Old Glenn HWY Overhead 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 June 2024.

How much traffic does Old Glenn Palmer over Old Glenn HWY Overhead carry?

About 1,710 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Old Glenn Palmer over Old Glenn HWY Overhead?

The structure is 132 ft (40.3 m) long with a longest span of 126 ft (38.4 m) and a deck 43 ft wide.

Who owns Old Glenn Palmer over Old Glenn HWY Overhead?

It is owned by the State Highway Agency.