US Bridges

US 20 (hwy 007) over Miller Creek

Good

Harney County, Oregon · 1.0 MI E Jct. US 395 · Structure no. 19903 007 10562

Built
2004
21 years old
Condition
Good
inspected June 2024
Type
Slab
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
2,325
2022 count
Owner
State
State Highway Agency

About this bridge

US 20 (hwy 007) over Miller Creek is a prestressed concrete slab carrying US 20 (hwy 007) over Miller Creek in Harney County, Oregon. It was built in 2004, so it is 21 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 2,325 vehicles a day, roughly 28% of them trucks, projected to reach 2,500 by 2042. The structure is 76 ft (23.3 m) long and 52 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesUS 20 (hwy 007)
CrossesMiller Creek
Location1.0 MI E Jct. US 395
RouteU.S. Route 20
StateOregon
Coordinates43.54205, -119.48794
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length76 ft (23.3 m)
Longest span76 ft (23.3 m)
Deck width52 ft (15.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,325 (2022)
Projected traffic2,500 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 20 (hwy 007) over Miller Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is US 20 (hwy 007) over Miller 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 June 2024.

How much traffic does US 20 (hwy 007) over Miller Creek carry?

About 2,325 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 20 (hwy 007) over Miller Creek?

The structure is 76 ft (23.3 m) long with a longest span of 76 ft (23.3 m) and a deck 52 ft wide.

Who owns US 20 (hwy 007) over Miller Creek?

It is owned by the State Highway Agency.