US Bridges

Elliott Highway over Hot Springs Slough

Fair

Yukon-Koyukuk Census Area, Alaska · Mile Point 145.8 · Structure no. 0272

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Truss - Thru
Steel
Length
222 ft
1 main span
Daily traffic
130
2020 count
Owner
State
State Highway Agency

About this bridge

Elliott Highway over Hot Springs Slough is a steel truss - thru carrying Elliott Highway over Hot Springs Slough in Yukon-Koyukuk Census Area, Alaska. It was built in 1961, so it is 64 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.

It carries about 130 vehicles a day, roughly 13% of them trucks, projected to reach 220 by 2039. The structure is 222 ft (67.7 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesElliott Highway
CrossesHot Springs Slough
LocationMile Point 145.8
RouteState Highway 680
CountyYukon-Koyukuk Census Area
StateAlaska
Coordinates65.00156, -150.63437
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating27.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadH 15
Structure length222 ft (67.7 m)
Longest span180 ft (54.9 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic130 (2020)
Projected traffic220 by 2039
Trucks13%
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 Elliott Highway over Hot Springs Slough built?

It was built in 1961, making it 64 years old in 2025.

What condition is Elliott Highway over Hot Springs Slough 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 2024.

How much traffic does Elliott Highway over Hot Springs Slough carry?

About 130 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Elliott Highway over Hot Springs Slough?

The structure is 222 ft (67.7 m) long with a longest span of 180 ft (54.9 m) and a deck 14 ft wide.

Who owns Elliott Highway over Hot Springs Slough?

It is owned by the State Highway Agency.