US Bridges

Smock Road over Gate Creek

Fair

Wasco County, Oregon · 4.7 Mi. S of Wamic · Structure no. 08327 230 00254

Built
1957
68 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
156 ft
3 main spans
Daily traffic
92
2020 count
Owner
County
County Highway Agency

About this bridge

Smock Road over Gate Creek is a concrete continuous tee beam carrying Smock Road over Gate Creek in Wasco County, Oregon. It was built in 1957, so it is 68 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 92 vehicles a day, roughly 1% of them trucks, projected to reach 107 by 2025. The structure is 156 ft (47.5 m) long and 29 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesSmock Road
CrossesGate Creek
Location4.7 Mi. S of Wamic
RouteCounty Highway 0
StateOregon
Coordinates45.17766, -121.31534
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating20 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span60 ft (18.3 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic92 (2020)
Projected traffic107 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 Smock Road over Gate Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Smock Road over Gate 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 Smock Road over Gate Creek carry?

About 92 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Smock Road over Gate Creek?

The structure is 156 ft (47.5 m) long with a longest span of 60 ft (18.3 m) and a deck 29 ft wide.

Who owns Smock Road over Gate Creek?

It is owned by the County Highway Agency.