US Bridges

Old HWY 99 over Davis Creek

Good

Douglas County, Oregon · In Winchester. · Structure no. 23253 000 01241

Built
2020
5 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
6,250
2010 count
Owner
County
County Highway Agency

About this bridge

Old HWY 99 over Davis Creek is a prestressed concrete slab carrying Old HWY 99 over Davis Creek in Douglas County, Oregon. It was built in 2020, so it is 5 years old, younger 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 6,250 vehicles a day, roughly 1% of them trucks, projected to reach 7,000 by 2030. The structure is 45 ft (13.7 m) long and 56 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesOld HWY 99
CrossesDavis Creek
LocationIn Winchester.
RouteCounty Highway 0
StateOregon
Coordinates43.28022, -123.35472
Functional classRural Minor Arterial

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length45 ft (13.7 m)
Longest span45 ft (13.7 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,250 (2010)
Projected traffic7,000 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Old HWY 99 over Davis Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Old HWY 99 over Davis Creek 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 April 2023.

How much traffic does Old HWY 99 over Davis Creek carry?

About 6,250 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Old HWY 99 over Davis Creek?

The structure is 45 ft (13.7 m) long with a longest span of 45 ft (13.7 m) and a deck 56 ft wide.

Who owns Old HWY 99 over Davis Creek?

It is owned by the County Highway Agency.