US Bridges

Intl Airport RD over Intl Airport RD Overhead

Fair

Anchorage Municipality, Alaska · Mile Point 1.9 · Structure no. 0700

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
150 ft
3 main spans
Daily traffic
12,800
2020 count
Owner
State
State Highway Agency

About this bridge

Intl Airport RD over Intl Airport RD Overhead is a prestressed concrete box beam or girders - multiple carrying Intl Airport RD over Intl Airport RD Overhead in Anchorage Municipality, Alaska. It was built in 1973, so it is 52 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 12,800 vehicles a day, roughly 5% of them trucks, projected to reach 28,900 by 2039. The structure is 150 ft (45.7 m) long and 93 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIntl Airport RD
CrossesIntl Airport RD Overhead
LocationMile Point 1.9
RouteState Highway 538
CountyAnchorage Municipality
StateAlaska
Coordinates61.17306, -149.91056
Functional classUrban Other Principal Arterial

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.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.2 US tons
Inventory rating29.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span50 ft (15.2 m)
Deck width93 ft (28.4 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,800 (2020)
Projected traffic28,900 by 2039
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 Intl Airport RD over Intl Airport RD Overhead built?

It was built in 1973, making it 52 years old in 2025.

What condition is Intl Airport RD over Intl Airport RD Overhead 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 Intl Airport RD over Intl Airport RD Overhead carry?

About 12,800 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Intl Airport RD over Intl Airport RD Overhead?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 93 ft wide.

Who owns Intl Airport RD over Intl Airport RD Overhead?

It is owned by the State Highway Agency.