US Bridges

Grimm Road over Woodcock Creek

Poor

Clackamas County, Oregon · 00.8 MI S of HWY 211 · Structure no. 06267 000 00085

Built
1970
55 years old
Condition
Poor
inspected April 2023
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
629
2020 count
Owner
County
County Highway Agency

About this bridge

Grimm Road over Woodcock Creek is a prestressed concrete slab carrying Grimm Road over Woodcock Creek in Clackamas County, Oregon. It was built in 1970, so it is 55 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 629 vehicles a day, roughly 17% of them trucks, projected to reach 674 by 2025. The structure is 28 ft (8.5 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesGrimm Road
CrossesWoodcock Creek
Location00.8 MI S of HWY 211
RouteCounty Highway C1179
CountyClackamas County
StateOregon
Coordinates45.14719, -122.50281
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic629 (2020)
Projected traffic674 by 2025
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Grimm Road over Woodcock Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Grimm Road over Woodcock Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Grimm Road over Woodcock Creek carry?

About 629 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is Grimm Road over Woodcock Creek?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns Grimm Road over Woodcock Creek?

It is owned by the County Highway Agency.