US Bridges

C-690 Non-Fa over Powder R (coffee Rd)

Fair

Baker County, Oregon · 0.6 MI E JCT US 30 · Structure no. 09571 690 00062

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
79 ft
3 main spans
Daily traffic
67
2020 count
Owner
County
County Highway Agency

About this bridge

C-690 Non-Fa over Powder R (coffee Rd) is a prestressed concrete slab carrying C-690 Non-Fa over Powder R (coffee Rd) in Baker County, Oregon. It was built in 1966, so it is 59 years old, older 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 67 vehicles a day, roughly 2% of them trucks, projected to reach 77 by 2025. The structure is 79 ft (24.1 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesC-690 Non-Fa
CrossesPowder R (coffee Rd)
Location0.6 MI E JCT US 30
RouteCounty Highway C0690
StateOregon
Coordinates44.91579, -117.92738
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span41 ft (12.5 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67 (2020)
Projected traffic77 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 C-690 Non-Fa over Powder R (coffee Rd) built?

It was built in 1966, making it 59 years old in 2025.

What condition is C-690 Non-Fa over Powder R (coffee 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 June 2023.

How much traffic does C-690 Non-Fa over Powder R (coffee Rd) carry?

About 67 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is C-690 Non-Fa over Powder R (coffee Rd)?

The structure is 79 ft (24.1 m) long with a longest span of 41 ft (12.5 m) and a deck 30 ft wide.

Who owns C-690 Non-Fa over Powder R (coffee Rd)?

It is owned by the County Highway Agency.