US Bridges

Taylor Grade over Fifteenmile Creek

Fair

Wasco County, Oregon · At South Valley Road · Structure no. 65C38 159 00421

Built
1973
52 years old
Condition
Fair
inspected August 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
21
2020 count
Owner
County
County Highway Agency

About this bridge

Taylor Grade over Fifteenmile Creek is a wood or timber slab carrying Taylor Grade over Fifteenmile Creek in Wasco County, Oregon. It was built in 1973, so it is 52 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.

It carries about 21 vehicles a day, roughly 1% of them trucks, projected to reach 26 by 2025. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesTaylor Grade
CrossesFifteenmile Creek
LocationAt South Valley Road
RouteCounty Highway 0
StateOregon
Coordinates45.39729, -121.27414
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2020)
Projected traffic26 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$133,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Taylor Grade over Fifteenmile Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Taylor Grade over Fifteenmile 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 Taylor Grade over Fifteenmile Creek carry?

About 21 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Taylor Grade over Fifteenmile Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.

Who owns Taylor Grade over Fifteenmile Creek?

It is owned by the County Highway Agency.