US Bridges

Irr: Airfield RD over Gold Creek

PoorPosted for load

Yukon-Koyukuk Census Area, Alaska · Mile Point 1.1 · Structure no. 0473

Built
1972
53 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
86
2018 count
Owner
State
State Highway Agency

About this bridge

Irr: Airfield RD over Gold Creek is a steel stringer/multi-beam or girder carrying Irr: Airfield RD over Gold Creek in Yukon-Koyukuk Census Area, Alaska. It was built in 1972, so it is 53 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 86 vehicles a day, roughly 6% of them trucks, projected to reach 120 by 2035. The structure is 31 ft (9.4 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIrr: Airfield RD
CrossesGold Creek
LocationMile Point 1.1
RouteState Highway NSP00
StateAlaska
Coordinates62.98725, -156.06864
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.7 US tons
Inventory rating10.4 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 15
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86 (2018)
Projected traffic120 by 2035
Trucks6%
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

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 Irr: Airfield RD over Gold Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Irr: Airfield RD over Gold Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Irr: Airfield RD over Gold Creek carry?

About 86 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Irr: Airfield RD over Gold Creek?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.

Who owns Irr: Airfield RD over Gold Creek?

It is owned by the State Highway Agency.