US Bridges

Wilsonville Road over Boeckman Creek

Fair

Clackamas County, Oregon · MP 12.62 Wilsonville RD · Structure no. 16627 000 01262

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
316 ft
5 main spans
Daily traffic
11,613
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wilsonville Road over Boeckman Creek is a prestressed concrete stringer/multi-beam or girder carrying Wilsonville Road over Boeckman Creek in Clackamas County, Oregon. It was built in 1986, so it is 39 years old, younger than the Oregon average of 49.9 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 11,613 vehicles a day, roughly 2% of them trucks, projected to reach 12,808 by 2025. The structure is 316 ft (96.3 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesWilsonville Road
CrossesBoeckman Creek
LocationMP 12.62 Wilsonville RD
RouteCity Street C0000
StateOregon
Coordinates45.30314, -122.75653
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to 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 rating38.9 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length316 ft (96.3 m)
Longest span66 ft (20.1 m)
Deck width54 ft (16.5 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,613 (2020)
Projected traffic12,808 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Wilsonville Road over Boeckman Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Wilsonville Road over Boeckman 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 2023.

How much traffic does Wilsonville Road over Boeckman Creek carry?

About 11,613 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Wilsonville Road over Boeckman Creek?

The structure is 316 ft (96.3 m) long with a longest span of 66 ft (20.1 m) and a deck 54 ft wide.

Who owns Wilsonville Road over Boeckman Creek?

It is owned by the City or Municipal Highway Agency.