US Bridges

Mcdowell CR RD over Mcdowell CR

Good

Linn County, Oregon · Mcdowell CR Park & Falls · Structure no. 11953 090400584

Built
1961
64 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
116 ft
1 main span
Daily traffic
168
2021 count
Owner
County
County Highway Agency

About this bridge

Mcdowell CR RD over Mcdowell CR is a prestressed concrete tee beam carrying Mcdowell CR RD over Mcdowell CR in Linn County, Oregon. It was built in 1961, so it is 64 years old, older 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 168 vehicles a day, roughly 16% of them trucks, projected to reach 185 by 2041. The structure is 116 ft (35.4 m) long and 20 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesMcdowell CR RD
CrossesMcdowell CR
LocationMcdowell CR Park & Falls
RouteCounty Highway C0904
StateOregon
Coordinates44.46601, -122.67697
Functional classRural Minor Collector

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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19 US tons
Inventory rating14.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span55 ft (16.8 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic168 (2021)
Projected traffic185 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$594,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcdowell CR RD over Mcdowell CR built?

It was built in 1961, making it 64 years old in 2025.

What condition is Mcdowell CR RD over Mcdowell CR 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 June 2023.

How much traffic does Mcdowell CR RD over Mcdowell CR carry?

About 168 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is Mcdowell CR RD over Mcdowell CR?

The structure is 116 ft (35.4 m) long with a longest span of 55 ft (16.8 m) and a deck 20 ft wide.

Who owns Mcdowell CR RD over Mcdowell CR?

It is owned by the County Highway Agency.