US Bridges

Blehm Road over No Fork Scappoose Creek

Good

Columbia County, Oregon · 020MI W Columbia CO Airpt · Structure no. 18244 000 00000

Built
1999
26 years old
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
208
2020 count
Owner
County
County Highway Agency

About this bridge

Blehm Road over No Fork Scappoose Creek is a prestressed concrete slab carrying Blehm Road over No Fork Scappoose Creek in Columbia County, Oregon. It was built in 1999, so it is 26 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 208 vehicles a day, roughly 5% of them trucks, projected to reach 230 by 2025. The structure is 69 ft (21 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBlehm Road
CrossesNo Fork Scappoose Creek
Location020MI W Columbia CO Airpt
RouteCounty Highway C1018
StateOregon
Coordinates45.78283, -122.90405
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length69 ft (21 m)
Longest span69 ft (21 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic208 (2020)
Projected traffic230 by 2025
Trucks5%
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 Blehm Road over No Fork Scappoose Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Blehm Road over No Fork Scappoose 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 Blehm Road over No Fork Scappoose Creek carry?

About 208 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Blehm Road over No Fork Scappoose Creek?

The structure is 69 ft (21 m) long with a longest span of 69 ft (21 m) and a deck 20 ft wide.

Who owns Blehm Road over No Fork Scappoose Creek?

It is owned by the County Highway Agency.