US Bridges

US 95 over Bnrr;colburn Overpass

Fair

Bonner County, Idaho · 1.4 N. Colburn · Structure no. 000000000018735

Built
1988
37 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
337 ft
3 main spans
Daily traffic
9,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 95 over Bnrr;colburn Overpass is a prestressed concrete continuous stringer/multi-beam or girder carrying US 95 over Bnrr;colburn Overpass in Bonner County, Idaho. It was built in 1988, so it is 37 years old, younger 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 9,300 vehicles a day, roughly 12% of them trucks, projected to reach 13,950 by 2042. The structure is 337 ft (102.7 m) long and 47 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUS 95
CrossesBnrr;colburn Overpass
Location1.4 N. Colburn
RouteU.S. Route 95
CountyBonner County
StateIdaho
Coordinates48.41256, -116.51786
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length337 ft (102.7 m)
Longest span111 ft (33.8 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,300 (2023)
Projected traffic13,950 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 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$4.4 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 95 over Bnrr;colburn Overpass built?

It was built in 1988, making it 37 years old in 2025.

What condition is US 95 over Bnrr;colburn Overpass 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 2023.

How much traffic does US 95 over Bnrr;colburn Overpass carry?

About 9,300 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 95 over Bnrr;colburn Overpass?

The structure is 337 ft (102.7 m) long with a longest span of 111 ft (33.8 m) and a deck 47 ft wide.

Who owns US 95 over Bnrr;colburn Overpass?

It is owned by the State Highway Agency.