US Bridges

N Slick Rock CR RD over Slick Rock Creek

Good

Lincoln County, Oregon · 014 MI S Rose Lodge · Structure no. 12006 501 136

Built
1963
62 years old, rebuilt 1974
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
883
2020 count
Owner
County
County Highway Agency

About this bridge

N Slick Rock CR RD over Slick Rock Creek is a prestressed concrete box beam or girders - multiple carrying N Slick Rock CR RD over Slick Rock Creek in Lincoln County, Oregon. It was built in 1963 and reconstructed in 1974, so it is 62 years old, older 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 883 vehicles a day, roughly 10% of them trucks, projected to reach 1,295 by 2040. The structure is 108 ft (32.9 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesN Slick Rock CR RD
CrossesSlick Rock Creek
Location014 MI S Rose Lodge
RouteCounty Highway 0
StateOregon
Coordinates45.00088, -123.85869
Functional classRural Local

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span58 ft (17.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic883 (2020)
Projected traffic1,295 by 2040
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$553,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N Slick Rock CR RD over Slick Rock Creek built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1974.

What condition is N Slick Rock CR RD over Slick Rock 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 September 2024.

How much traffic does N Slick Rock CR RD over Slick Rock Creek carry?

About 883 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is N Slick Rock CR RD over Slick Rock Creek?

The structure is 108 ft (32.9 m) long with a longest span of 58 ft (17.7 m) and a deck 16 ft wide.

Who owns N Slick Rock CR RD over Slick Rock Creek?

It is owned by the County Highway Agency.