US Bridges

County RD 5 over Archambeau Creek

Poor

Douglas County, Oregon · 3.6 MI W of Lookingglass · Structure no. 19C344 5 1005

Built
1974
51 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
724
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 5 over Archambeau Creek is a steel stringer/multi-beam or girder carrying County RD 5 over Archambeau Creek 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 724 vehicles a day, roughly 10% of them trucks, projected to reach 819 by 2025. The structure is 40 ft (12.2 m) long and 33 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesCounty RD 5
CrossesArchambeau Creek
Location3.6 MI W of Lookingglass
RouteCounty Highway 0A394
CountyDouglas County
StateOregon
Coordinates43.18187, -123.55393
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic724 (2020)
Projected traffic819 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 5 over Archambeau Creek built?

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

What condition is County RD 5 over Archambeau Creek 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 July 2023.

How much traffic does County RD 5 over Archambeau Creek carry?

About 724 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 5 over Archambeau Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 33 ft wide.

Who owns County RD 5 over Archambeau Creek?

It is owned by the County Highway Agency.