US Bridges

Ellwood Ave over Little Clear Creek

Good

Clackamas County, Oregon · 02.0 MI SE of HWY 211 · Structure no. 06599A000

Built
1976
49 years old
Condition
Good
inspected April 2023
Type
Channel Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
58
2020 count
Owner
County
County Highway Agency

About this bridge

Ellwood Ave over Little Clear Creek is a prestressed concrete channel beam carrying Ellwood Ave over Little Clear Creek in Clackamas County, Oregon. It was built in 1976, so it is 49 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 58 vehicles a day, roughly 17% of them trucks, projected to reach 62 by 2025. The structure is 29 ft (8.8 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesEllwood Ave
CrossesLittle Clear Creek
Location02.0 MI SE of HWY 211
RouteCounty Highway C1521
StateOregon
Coordinates45.18991, -122.33117
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.1 US tons
Inventory rating20 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2020)
Projected traffic62 by 2025
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Ellwood Ave over Little Clear Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Ellwood Ave over Little Clear 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 Ellwood Ave over Little Clear Creek carry?

About 58 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is Ellwood Ave over Little Clear Creek?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 37 ft wide.

Who owns Ellwood Ave over Little Clear Creek?

It is owned by the County Highway Agency.