US Bridges

Canby-Marquam HWY over Gribble Creek

Good

Clackamas County, Oregon · 040 Mi. So. of Canby · Structure no. 06025 610100900

Built
1982
43 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
1,863
2020 count
Owner
County
County Highway Agency

About this bridge

Canby-Marquam HWY over Gribble Creek is a prestressed concrete slab carrying Canby-Marquam HWY over Gribble Creek in Clackamas County, Oregon. It was built in 1982, so it is 43 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,863 vehicles a day, roughly 14% of them trucks, projected to reach 1,995 by 2025. The structure is 25 ft (7.6 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCanby-Marquam HWY
CrossesGribble Creek
Location040 Mi. So. of Canby
RouteCounty Highway 0A882
StateOregon
Coordinates45.1956, -122.67919
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,863 (2020)
Projected traffic1,995 by 2025
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Canby-Marquam HWY over Gribble Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Canby-Marquam HWY over Gribble 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 April 2023.

How much traffic does Canby-Marquam HWY over Gribble Creek carry?

About 1,863 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is Canby-Marquam HWY over Gribble Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns Canby-Marquam HWY over Gribble Creek?

It is owned by the County Highway Agency.