US Bridges

Arock C-729 over Jordan Creek

Fair

Malheur County, Oregon · 1.8 M N HWY 95 · Structure no. 09996 072900050

Built
1970
55 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
150 ft
3 main spans
Daily traffic
244
2020 count
Owner
County
County Highway Agency

About this bridge

Arock C-729 over Jordan Creek is a prestressed concrete slab carrying Arock C-729 over Jordan Creek in Malheur County, Oregon. It was built in 1970, so it is 55 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 244 vehicles a day, roughly 10% of them trucks, projected to reach 289 by 2025. The structure is 150 ft (45.7 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesArock C-729
CrossesJordan Creek
Location1.8 M N HWY 95
RouteCounty Highway 0B480
CountyMalheur County
StateOregon
Coordinates42.90498, -117.51921
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span50 ft (15.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic244 (2020)
Projected traffic289 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Arock C-729 over Jordan Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Arock C-729 over Jordan Creek 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 September 2023.

How much traffic does Arock C-729 over Jordan Creek carry?

About 244 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Arock C-729 over Jordan Creek?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns Arock C-729 over Jordan Creek?

It is owned by the County Highway Agency.