US Bridges

County RD over Clear Creek

Good

Grant County, Oregon · 2.5 Miles West of Granite · Structure no. 23C242 0000 620

Built
1998
27 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
383
2020 count
Owner
County
County Highway Agency

About this bridge

County RD over Clear Creek is a prestressed concrete slab carrying County RD over Clear Creek in Grant County, Oregon. It was built in 1998, so it is 27 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 383 vehicles a day, roughly 10% of them trucks, projected to reach 468 by 2025. The structure is 66 ft (20.1 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty RD
CrossesClear Creek
Location2.5 Miles West of Granite
RouteCounty Highway 0
StateOregon
Coordinates44.7946, -118.4737
Functional classRural Minor Collector

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 inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span65 ft (19.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic383 (2020)
Projected traffic468 by 2025
Trucks10%
Lanes on structure1
Traffic directionOne-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$338,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD over Clear Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is County RD over Clear 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 August 2023.

How much traffic does County RD over Clear Creek carry?

About 383 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD over Clear Creek?

The structure is 66 ft (20.1 m) long with a longest span of 65 ft (19.8 m) and a deck 16 ft wide.

Who owns County RD over Clear Creek?

It is owned by the County Highway Agency.