US Bridges

Irr:main Street over Big Contact Creek

Good

North Slope Borough, Alaska · Mile Point 0.5 · Structure no. 1987

Built
2013
12 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
101 ft
1 main span
Daily traffic
50
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Irr:main Street over Big Contact Creek is a steel stringer/multi-beam or girder carrying Irr:main Street over Big Contact Creek in North Slope Borough, Alaska. It was built in 2013, so it is 12 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 1% of them trucks, projected to reach 80 by 2035. The structure is 101 ft (30.8 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIrr:main Street
CrossesBig Contact Creek
LocationMile Point 0.5
RouteCity Street 0
StateAlaska
Coordinates68.14312, -151.73327
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.6 US tons
Inventory rating71.2 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHL 93
Structure length101 ft (30.8 m)
Longest span98 ft (29.9 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2018)
Projected traffic80 by 2035
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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:main Street over Big Contact Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is Irr:main Street over Big Contact Creek 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 August 2024.

How much traffic does Irr:main Street over Big Contact Creek carry?

About 50 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Irr:main Street over Big Contact Creek?

The structure is 101 ft (30.8 m) long with a longest span of 98 ft (29.9 m) and a deck 25 ft wide.

Who owns Irr:main Street over Big Contact Creek?

It is owned by the City or Municipal Highway Agency.