US Bridges

Old HWY 30 over Beaver Creek

Fair

Columbia County, Oregon · 006 Miw JCT HWY30/LARSONR · Structure no. 09C57 209700696

Built
1918
107 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
35 ft
1 main span
Daily traffic
1,350
2020 count
Owner
County
County Highway Agency

About this bridge

Old HWY 30 over Beaver Creek is a concrete tee beam carrying Old HWY 30 over Beaver Creek in Columbia County, Oregon. It was built in 1918, so it is 107 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 5 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 1,350 vehicles a day, roughly 10% of them trucks, projected to reach 1,530 by 2025. The structure is 35 ft (10.7 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld HWY 30
CrossesBeaver Creek
Location006 Miw JCT HWY30/LARSONR
RouteCounty Highway A0755
CountyColumbia County
StateOregon
Coordinates46.09241, -122.99849
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width23 ft (6.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2020)
Projected traffic1,530 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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$179,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old HWY 30 over Beaver Creek built?

It was built in 1918, making it 107 years old in 2025.

What condition is Old HWY 30 over Beaver 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 May 2023.

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

About 1,350 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Old HWY 30 over Beaver Creek?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 23 ft wide.

Who owns Old HWY 30 over Beaver Creek?

It is owned by the County Highway Agency.