US Bridges

Rockwell Road over Mckay Creek

FairPosted for load

Umatilla County, Oregon · 1.1 MI E of HWY 395 · Structure no. 59C77 107501093

Built
1965
60 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
162
2020 count
Owner
County
County Highway Agency

About this bridge

Rockwell Road over Mckay Creek is a steel stringer/multi-beam or girder carrying Rockwell Road over Mckay Creek in Umatilla County, Oregon. It was built in 1965, so it is 60 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 162 vehicles a day, roughly 10% of them trucks, projected to reach 188 by 2025. The structure is 61 ft (18.6 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRockwell Road
CrossesMckay Creek
Location1.1 MI E of HWY 395
RouteCounty Highway 0
CountyUmatilla County
StateOregon
Coordinates45.52242, -118.77199
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating9.3 US tons
Inventory rating7.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span58 ft (17.7 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2020)
Projected traffic188 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Rockwell Road over Mckay Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Rockwell Road over Mckay 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 July 2024.

How much traffic does Rockwell Road over Mckay Creek carry?

About 162 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Rockwell Road over Mckay Creek?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.7 m) and a deck 25 ft wide.

Who owns Rockwell Road over Mckay Creek?

It is owned by the County Highway Agency.