US Bridges

County RD 23 over Williams Creek

Fair

Douglas County, Oregon · 3.7 MI W of Oakland · Structure no. 19C175002300369

Built
1974
51 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
2 main spans
Daily traffic
486
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 23 over Williams Creek is a steel stringer/multi-beam or girder carrying County RD 23 over Williams 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 486 vehicles a day, roughly 5% of them trucks, projected to reach 551 by 2025. The structure is 71 ft (21.6 m) long and 33 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCounty RD 23
CrossesWilliams Creek
Location3.7 MI W of Oakland
RouteCounty Highway C0023
CountyDouglas County
StateOregon
Coordinates43.42334, -123.35869
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79.7 US tons
Inventory rating61.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length71 ft (21.6 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic486 (2020)
Projected traffic551 by 2025
Trucks5%
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 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 23 over Williams Creek built?

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

What condition is County RD 23 over Williams Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does County RD 23 over Williams Creek carry?

About 486 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 23 over Williams Creek?

The structure is 71 ft (21.6 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns County RD 23 over Williams Creek?

It is owned by the County Highway Agency.