US Bridges

Fifteen Mile RD over Fifteenmile Creek

FairPosted for load

Wasco County, Oregon · Free Bridge · Structure no. 65C16 019 00349

Built
1964
61 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
128 ft
3 main spans
Daily traffic
68
2020 count
Owner
County
County Highway Agency

About this bridge

Fifteen Mile RD over Fifteenmile Creek is a wood or timber stringer/multi-beam or girder carrying Fifteen Mile RD over Fifteenmile Creek in Wasco County, Oregon. It was built in 1964, so it is 61 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 68 vehicles a day, roughly 10% of them trucks, projected to reach 78 by 2025. The structure is 128 ft (39 m) long and 24 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesFifteen Mile RD
CrossesFifteenmile Creek
LocationFree Bridge
RouteCounty Highway 0
StateOregon
Coordinates45.57486, -120.96153
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.1 US tons
Inventory rating12.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length128 ft (39 m)
Longest span64 ft (19.5 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2020)
Projected traffic78 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Fifteen Mile RD over Fifteenmile Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Fifteen Mile RD 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 Fifteen Mile RD over Fifteenmile Creek carry?

About 68 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Fifteen Mile RD over Fifteenmile Creek?

The structure is 128 ft (39 m) long with a longest span of 64 ft (19.5 m) and a deck 24 ft wide.

Who owns Fifteen Mile RD over Fifteenmile Creek?

It is owned by the County Highway Agency.