US Bridges

Dowty Road over Eagle Creek

Good

Clackamas County, Oregon · 01.0 MI SW of HWY 224 · Structure no. 18094 000 129

Built
2000
25 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
149 ft
2 main spans
Daily traffic
767
2020 count
Owner
County
County Highway Agency

About this bridge

Dowty Road over Eagle Creek is a prestressed concrete box beam or girders - multiple carrying Dowty Road over Eagle Creek in Clackamas County, Oregon. It was built in 2000, so it is 25 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 767 vehicles a day, roughly 1% of them trucks, projected to reach 857 by 2025. The structure is 149 ft (45.5 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesDowty Road
CrossesEagle Creek
Location01.0 MI SW of HWY 224
RouteCounty Highway C0492
StateOregon
Coordinates45.35108, -122.37643
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length149 ft (45.5 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic767 (2020)
Projected traffic857 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Dowty Road over Eagle Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Dowty Road over Eagle 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 July 2024.

How much traffic does Dowty Road over Eagle Creek carry?

About 767 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Dowty Road over Eagle Creek?

The structure is 149 ft (45.5 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns Dowty Road over Eagle Creek?

It is owned by the County Highway Agency.