US Bridges

County RD 1121 over Burnt R (clarks Creek RD

Fair

Baker County, Oregon · 0.1 MI S JCT CO RD#875 · Structure no. 20259 112100006

Built
2005
20 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
83 ft
1 main span
Daily traffic
82
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 1121 over Burnt R (clarks Creek RD is a prestressed concrete slab carrying County RD 1121 over Burnt R (clarks Creek RD in Baker County, Oregon. It was built in 2005, so it is 20 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 82 vehicles a day, roughly 10% of them trucks, projected to reach 92 by 2025. The structure is 83 ft (25.3 m) long and 28 ft wide.

CarriesCounty RD 1121
CrossesBurnt R (clarks Creek RD
Location0.1 MI S JCT CO RD#875
RouteCounty Highway C1121
StateOregon
Coordinates44.50361, -117.72842
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating98 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length83 ft (25.3 m)
Longest span80 ft (24.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2020)
Projected traffic92 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 County RD 1121 over Burnt R (clarks Creek RD built?

It was built in 2005, making it 20 years old in 2025.

What condition is County RD 1121 over Burnt R (clarks Creek RD in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does County RD 1121 over Burnt R (clarks Creek RD carry?

About 82 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 1121 over Burnt R (clarks Creek RD?

The structure is 83 ft (25.3 m) long with a longest span of 80 ft (24.4 m) and a deck 28 ft wide.

Who owns County RD 1121 over Burnt R (clarks Creek RD?

It is owned by the County Highway Agency.