US Bridges

Stc 5783;PENINSULA over Lower West Br. Priest R.

Fair

Bonner County, Idaho · 3.2N. 0.3E. Priest River · Structure no. 000000000020625

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
780
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 5783;PENINSULA over Lower West Br. Priest R. is a prestressed concrete stringer/multi-beam or girder carrying Stc 5783;PENINSULA over Lower West Br. Priest R. in Bonner County, Idaho. It was built in 1975, so it is 50 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 780 vehicles a day, roughly 15% of them trucks, projected to reach 1,170 by 2042. The structure is 75 ft (22.9 m) long and 32 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesStc 5783;PENINSULA
CrossesLower West Br. Priest R.
Location3.2N. 0.3E. Priest River
RouteCounty Highway 5783
CountyBonner County
StateIdaho
Coordinates48.22586, -116.90439
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span73 ft (22.3 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic780 (2023)
Projected traffic1,170 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 5783;PENINSULA over Lower West Br. Priest R. built?

It was built in 1975, making it 50 years old in 2025.

What condition is Stc 5783;PENINSULA over Lower West Br. Priest R. 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 Stc 5783;PENINSULA over Lower West Br. Priest R. carry?

About 780 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Stc 5783;PENINSULA over Lower West Br. Priest R.?

The structure is 75 ft (22.9 m) long with a longest span of 73 ft (22.3 m) and a deck 32 ft wide.

Who owns Stc 5783;PENINSULA over Lower West Br. Priest R.?

It is owned by the County Highway Agency.