US Bridges

County RD 12 over Cow Creek at Glendale

Poor

Douglas County, Oregon · In Glendale · Structure no. 19C364 12 1052

Built
1974
51 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
261 ft
3 main spans
Daily traffic
2,574
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 12 over Cow Creek at Glendale is a steel stringer/multi-beam or girder carrying County RD 12 over Cow Creek at Glendale in Douglas County, Oregon. It was built in 1974, so it is 51 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 2,574 vehicles a day, roughly 20% of them trucks, projected to reach 2,909 by 2025. The structure is 261 ft (79.6 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCounty RD 12
CrossesCow Creek at Glendale
LocationIn Glendale
RouteCounty Highway 0A384
StateOregon
Coordinates42.73947, -123.42076
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 12 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 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 rating63.9 US tons
Inventory rating49.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length261 ft (79.6 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,574 (2020)
Projected traffic2,909 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 County RD 12 over Cow Creek at Glendale built?

It was built in 1974, making it 51 years old in 2025.

What condition is County RD 12 over Cow Creek at Glendale 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 County RD 12 over Cow Creek at Glendale carry?

About 2,574 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is County RD 12 over Cow Creek at Glendale?

The structure is 261 ft (79.6 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns County RD 12 over Cow Creek at Glendale?

It is owned by the County Highway Agency.