US Bridges

Sterling L/Ophir over Ganes Creek

FairPosted for load

Yukon-Koyukuk Census Area, Alaska · Mile Point 37.1 · Structure no. 0467

Built
1937
88 years old
Condition
Fair
inspected July 2024
Type
Truss - Thru
Steel
Length
120 ft
1 main span
Daily traffic
45
2018 count
Owner
State
State Highway Agency

About this bridge

Sterling L/Ophir over Ganes Creek is a steel truss - thru carrying Sterling L/Ophir over Ganes Creek in Yukon-Koyukuk Census Area, Alaska. It was built in 1937, so it is 88 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 45 vehicles a day, roughly 6% of them trucks, projected to reach 70 by 2035. The structure is 120 ft (36.6 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesSterling L/Ophir
CrossesGanes Creek
LocationMile Point 37.1
RouteState Highway NSP00
CountyYukon-Koyukuk Census Area
StateAlaska
Coordinates63.08907, -156.4326
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.8 US tons
Inventory rating14.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span100 ft (30.5 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2018)
Projected traffic70 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 Sterling L/Ophir over Ganes Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is Sterling L/Ophir over Ganes Creek 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 2024.

How much traffic does Sterling L/Ophir over Ganes Creek carry?

About 45 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Sterling L/Ophir over Ganes Creek?

The structure is 120 ft (36.6 m) long with a longest span of 100 ft (30.5 m) and a deck 12 ft wide.

Who owns Sterling L/Ophir over Ganes Creek?

It is owned by the State Highway Agency.