US Bridges

Keasey Road over Rock Creek

Good

Columbia County, Oregon · 018 MI East Keasey · Structure no. 13648B306400196

Built
1980
45 years old
Condition
Good
inspected May 2023
Type
Channel Beam
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
252
2020 count
Owner
County
County Highway Agency

About this bridge

Keasey Road over Rock Creek is a prestressed concrete channel beam carrying Keasey Road over Rock Creek in Columbia County, Oregon. It was built in 1980, so it is 45 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 252 vehicles a day, roughly 10% of them trucks, projected to reach 287 by 2025. The structure is 85 ft (25.9 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesKeasey Road
CrossesRock Creek
Location018 MI East Keasey
RouteCounty Highway A0756
StateOregon
Coordinates45.87581, -123.30647
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span84 ft (25.6 m)
Deck width28 ft (8.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic252 (2020)
Projected traffic287 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Keasey Road over Rock Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Keasey Road over Rock 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 Keasey Road over Rock Creek carry?

About 252 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Keasey Road over Rock Creek?

The structure is 85 ft (25.9 m) long with a longest span of 84 ft (25.6 m) and a deck 28 ft wide.

Who owns Keasey Road over Rock Creek?

It is owned by the County Highway Agency.