US Bridges

W Poirer Road over Lake Creek

Fair

Kootenai County, Idaho · 6.3 N. 3.9 W. Worley · Structure no. 000000000030525

Built
1950
75 years old, rebuilt 1998
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
33 ft
1 main span
Daily traffic
10
2023 count
Owner
Local
Other Local Agency

About this bridge

W Poirer Road over Lake Creek is a steel continuous stringer/multi-beam or girder carrying W Poirer Road over Lake Creek in Kootenai County, Idaho. It was built in 1950 and reconstructed in 1998, so it is 75 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 6 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 10 vehicles a day, roughly 5% of them trucks, projected to reach 15 by 2039. The structure is 33 ft (10.1 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesW Poirer Road
CrossesLake Creek
Location6.3 N. 3.9 W. Worley
RouteCounty Highway 0
CountyKootenai County
StateIdaho
Coordinates47.49178, -117.00192
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic15 by 2039
Trucks5%
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

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$381,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W Poirer Road over Lake Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1998.

What condition is W Poirer Road over Lake 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 August 2023.

How much traffic does W Poirer Road over Lake Creek carry?

About 10 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is W Poirer Road over Lake Creek?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 16 ft wide.

Who owns W Poirer Road over Lake Creek?

It is owned by the Other Local Agency.