US Bridges

Old HWY 99 over Davis Creek

Good

Douglas County, Oregon · 02.5 N Roeburg Ncl · Structure no. 23254 000 01308

Built
2021
4 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
9,214
2020 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 2021, so it is 4 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 9,214 vehicles a day, roughly 6% of them trucks, projected to reach 9,964 by 2025. The structure is 47 ft (14.3 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesOld HWY 99
CrossesDavis Creek
Location02.5 N Roeburg Ncl
RouteCounty Highway A0411
StateOregon
Coordinates43.2702, -123.3536
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length47 ft (14.3 m)
Longest span45 ft (13.7 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,214 (2020)
Projected traffic9,964 by 2025
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 2021, making it 4 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 9,214 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Old HWY 99 over Davis Creek?

The structure is 47 ft (14.3 m) long with a longest span of 45 ft (13.7 m) and a deck 36 ft wide.

Who owns Old HWY 99 over Davis Creek?

It is owned by the County Highway Agency.