US Bridges

Lukes Gulch Road over Three Mile Creek

Fair

Idaho County, Idaho · 2.8 S. 0.4 W. Stites · Structure no. 000000000029210

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
430
2023 count
Owner
County
County Highway Agency

About this bridge

Lukes Gulch Road over Three Mile Creek is a steel stringer/multi-beam or girder carrying Lukes Gulch Road over Three Mile Creek in Idaho County, Idaho. It was built in 1965, so it is 60 years old, older than the Idaho average of 45.3 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 430 vehicles a day, roughly 8% of them trucks, projected to reach 645 by 2042. The structure is 37 ft (11.3 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLukes Gulch Road
CrossesThree Mile Creek
Location2.8 S. 0.4 W. Stites
RouteCounty Highway 0
StateIdaho
Coordinates46.05112, -115.98329
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating46 US tons
Inventory rating27 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic430 (2023)
Projected traffic645 by 2042
Trucks8%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$431,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lukes Gulch Road over Three Mile Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Lukes Gulch Road over Three Mile 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 June 2024.

How much traffic does Lukes Gulch Road over Three Mile Creek carry?

About 430 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Lukes Gulch Road over Three Mile Creek?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 18 ft wide.

Who owns Lukes Gulch Road over Three Mile Creek?

It is owned by the County Highway Agency.