US Bridges

CO RD 18 over S.Fork Long Creek

FairPosted for load

Grant County, Oregon · 4.7 MI E JCT US 395 · Structure no. 23C181018 00470

Built
1967
58 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
21
2020 count
Owner
County
County Highway Agency

About this bridge

CO RD 18 over S.Fork Long Creek is a steel stringer/multi-beam or girder carrying CO RD 18 over S.Fork Long Creek in Grant County, Oregon. It was built in 1967, so it is 58 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 21 vehicles a day, projected to reach 26 by 2025. The structure is 24 ft (7.3 m) long and 30 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesCO RD 18
CrossesS.Fork Long Creek
Location4.7 MI E JCT US 395
RouteCounty Highway C0018
CountyGrant County
StateOregon
Coordinates44.69219, -119.01624
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating6.4 US tons
Inventory rating5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2020)
Projected traffic26 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 CO RD 18 over S.Fork Long Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is CO RD 18 over S.Fork Long 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 August 2024.

How much traffic does CO RD 18 over S.Fork Long Creek carry?

About 21 vehicles per day (2020 count).

How long is CO RD 18 over S.Fork Long Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.

Who owns CO RD 18 over S.Fork Long Creek?

It is owned by the County Highway Agency.