US Bridges

County RD 146 over Halls Creek

Good

Coos County, Oregon · At Arago Boat Ramp · Structure no. 15407A014600827

Built
1992
33 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
353
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 146 over Halls Creek is a prestressed concrete slab carrying County RD 146 over Halls Creek in Coos County, Oregon. It was built in 1992, so it is 33 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 353 vehicles a day, roughly 10% of them trucks, projected to reach 398 by 2025. The structure is 73 ft (22.3 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCounty RD 146
CrossesHalls Creek
LocationAt Arago Boat Ramp
RouteCounty Highway 146
StateOregon
Coordinates43.0985, -124.1904
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length73 ft (22.3 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic353 (2020)
Projected traffic398 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 County RD 146 over Halls Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is County RD 146 over Halls 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 September 2024.

How much traffic does County RD 146 over Halls Creek carry?

About 353 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 146 over Halls Creek?

The structure is 73 ft (22.3 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns County RD 146 over Halls Creek?

It is owned by the County Highway Agency.