US Bridges

West Beplate Road over Deep Creek

FairPosted for load

Latah County, Idaho · 4.9 N. 1.1 W. Potlatch · Structure no. 000000000029580

Built
1970
55 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
150
2023 count
Owner
Local
Other Local Agency

About this bridge

West Beplate Road over Deep Creek is a steel stringer/multi-beam or girder carrying West Beplate Road over Deep Creek in Latah County, Idaho. It was built in 1970, so it is 55 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. Its operating status is: posted for load restriction.

It carries about 150 vehicles a day, roughly 10% of them trucks, projected to reach 225 by 2039. The structure is 40 ft (12.2 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesWest Beplate Road
CrossesDeep Creek
Location4.9 N. 1.1 W. Potlatch
RouteCounty Highway 0
CountyLatah County
StateIdaho
Coordinates46.99303, -116.92375
Functional classRural Local

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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic225 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$416,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was West Beplate Road over Deep Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is West Beplate Road over Deep 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 West Beplate Road over Deep Creek carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is West Beplate Road over Deep Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 31 ft wide.

Who owns West Beplate Road over Deep Creek?

It is owned by the Other Local Agency.