US Bridges

Grahams Ferry Road over Corral Creek

Good

Clackamas County, Oregon · 00.5 MI N of Wilsonville · Structure no. 06096 000 00050

Built
1968
57 years old
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
604
2020 count
Owner
County
County Highway Agency

About this bridge

Grahams Ferry Road over Corral Creek is a prestressed concrete slab carrying Grahams Ferry Road over Corral Creek in Clackamas County, Oregon. It was built in 1968, so it is 57 years old, older 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 604 vehicles a day, roughly 9% of them trucks, projected to reach 666 by 2025. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesGrahams Ferry Road
CrossesCorral Creek
Location00.5 MI N of Wilsonville
RouteCounty Highway C0013
StateOregon
Coordinates45.29445, -122.81418
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span33 ft (10.1 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic604 (2020)
Projected traffic666 by 2025
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$169,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Grahams Ferry Road over Corral Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Grahams Ferry Road over Corral 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 Grahams Ferry Road over Corral Creek carry?

About 604 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is Grahams Ferry Road over Corral Creek?

The structure is 33 ft (10.1 m) long with a longest span of 33 ft (10.1 m) and a deck 24 ft wide.

Who owns Grahams Ferry Road over Corral Creek?

It is owned by the County Highway Agency.