US Bridges

Mcdowell CR Drive over Willow Creek EB

Poor

Linn County, Oregon · 007 MI East of HWY 20 · Structure no. 11950A072900068

Built
1958
67 years old
Condition
Poor
inspected June 2024
Type
Tee Beam
Concrete
Length
67 ft
3 main spans
Daily traffic
670
2021 count
Owner
County
County Highway Agency

About this bridge

Mcdowell CR Drive over Willow Creek EB is a concrete tee beam carrying Mcdowell CR Drive over Willow Creek EB in Linn County, Oregon. It was built in 1958, so it is 67 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 3 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 670 vehicles a day, roughly 10% of them trucks, projected to reach 824 by 2041. The structure is 67 ft (20.4 m) long and 29 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesMcdowell CR Drive
CrossesWillow Creek EB
Location007 MI East of HWY 20
RouteCounty Highway A0485
StateOregon
Coordinates44.47627, -122.79755
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span22 ft (6.7 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2021)
Projected traffic824 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Mcdowell CR Drive over Willow Creek EB built?

It was built in 1958, making it 67 years old in 2025.

What condition is Mcdowell CR Drive over Willow Creek EB 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 June 2024.

How much traffic does Mcdowell CR Drive over Willow Creek EB carry?

About 670 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Mcdowell CR Drive over Willow Creek EB?

The structure is 67 ft (20.4 m) long with a longest span of 22 ft (6.7 m) and a deck 29 ft wide.

Who owns Mcdowell CR Drive over Willow Creek EB?

It is owned by the County Highway Agency.