US Bridges

US 2 over Johnson Creek

Fair

Bonner County, Idaho · 3.4 E. Laclede · Structure no. 000000000010015

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
144 ft
3 main spans
Daily traffic
5,700
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Johnson Creek is a prestressed concrete stringer/multi-beam or girder carrying US 2 over Johnson Creek in Bonner 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.

It carries about 5,700 vehicles a day, roughly 12% of them trucks, projected to reach 8,550 by 2042. The structure is 144 ft (43.9 m) long and 37 ft wide. If it were closed, the detour would be 46 mi (74 km).

Location

Open in Google Maps
CarriesUS 2
CrossesJohnson Creek
Location3.4 E. Laclede
RouteU.S. Route 2
CountyBonner County
StateIdaho
Coordinates48.21183, -116.71992
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length144 ft (43.9 m)
Longest span48 ft (14.6 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,700 (2023)
Projected traffic8,550 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46 mi (74 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 2 over Johnson Creek built?

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

What condition is US 2 over Johnson 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 May 2024.

How much traffic does US 2 over Johnson Creek carry?

About 5,700 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 2 over Johnson Creek?

The structure is 144 ft (43.9 m) long with a longest span of 48 ft (14.6 m) and a deck 37 ft wide.

Who owns US 2 over Johnson Creek?

It is owned by the State Highway Agency.