US Bridges

Old HWY 30 over South Beaver Creek

Good

Columbia County, Oregon · 005 MI E HWY 30 JCT · Structure no. 20657 209700730

Built
2007
18 years old
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
675
2020 count
Owner
County
County Highway Agency

About this bridge

Old HWY 30 over South Beaver Creek is a prestressed concrete slab carrying Old HWY 30 over South Beaver Creek in Columbia County, Oregon. It was built in 2007, so it is 18 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 675 vehicles a day, roughly 10% of them trucks, projected to reach 710 by 2025. The structure is 50 ft (15.2 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOld HWY 30
CrossesSouth Beaver Creek
Location005 MI E HWY 30 JCT
RouteCounty Highway A0755
StateOregon
Coordinates46.0932, -123.0334
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic675 (2020)
Projected traffic710 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Old HWY 30 over South Beaver Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Old HWY 30 over South Beaver 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 May 2023.

How much traffic does Old HWY 30 over South Beaver Creek carry?

About 675 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Old HWY 30 over South Beaver Creek?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 40 ft wide.

Who owns Old HWY 30 over South Beaver Creek?

It is owned by the County Highway Agency.