US Bridges

North Bank Road over Fishhawk Creek

Good

Columbia County, Oregon · 010 MI N of Birkenfeld · Structure no. 18762 305500025

Built
2000
25 years old
Condition
Good
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
141 ft
1 main span
Daily traffic
44
2020 count
Owner
County
County Highway Agency

About this bridge

North Bank Road over Fishhawk Creek is a prestressed concrete tee beam carrying North Bank Road over Fishhawk Creek in Columbia County, Oregon. It was built in 2000, so it is 25 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 44 vehicles a day, roughly 10% of them trucks, projected to reach 49 by 2025. The structure is 141 ft (43 m) long and 19 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNorth Bank Road
CrossesFishhawk Creek
Location010 MI N of Birkenfeld
RouteCounty Highway C3055
StateOregon
Coordinates46.00185, -123.33782
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length141 ft (43 m)
Longest span140 ft (42.7 m)
Deck width19 ft (5.7 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2020)
Projected traffic49 by 2025
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$722,000
NavigationNo navigation control on waterway

Frequently asked questions

When was North Bank Road over Fishhawk Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is North Bank Road over Fishhawk Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does North Bank Road over Fishhawk Creek carry?

About 44 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is North Bank Road over Fishhawk Creek?

The structure is 141 ft (43 m) long with a longest span of 140 ft (42.7 m) and a deck 19 ft wide.

Who owns North Bank Road over Fishhawk Creek?

It is owned by the County Highway Agency.