US Bridges

Camp Polk Road over Whychus Creek Camp Polk

Good

Deschutes County, Oregon · 0814 MI NE of Sisters · Structure no. 09C05AC32 00414

Built
1986
39 years old
Condition
Good
inspected February 2023
Type
Slab
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
810
2020 count
Owner
County
County Highway Agency

About this bridge

Camp Polk Road over Whychus Creek Camp Polk is a prestressed concrete slab carrying Camp Polk Road over Whychus Creek Camp Polk in Deschutes County, Oregon. It was built in 1986, so it is 39 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 810 vehicles a day, roughly 2% of them trucks, projected to reach 955 by 2025. The structure is 49 ft (14.9 m) long and 32 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesCamp Polk Road
CrossesWhychus Creek Camp Polk
Location0814 MI NE of Sisters
RouteCounty Highway 1161
StateOregon
Coordinates44.3183, -121.51519
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic810 (2020)
Projected traffic955 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Camp Polk Road over Whychus Creek Camp Polk built?

It was built in 1986, making it 39 years old in 2025.

What condition is Camp Polk Road over Whychus Creek Camp Polk 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 February 2023.

How much traffic does Camp Polk Road over Whychus Creek Camp Polk carry?

About 810 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Camp Polk Road over Whychus Creek Camp Polk?

The structure is 49 ft (14.9 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns Camp Polk Road over Whychus Creek Camp Polk?

It is owned by the County Highway Agency.