US Bridges

West Main Street over East Birch Creek

Fair

Umatilla County, Oregon · 0.05 MI E of HWY 395 · Structure no. 59C901000000002

Built
1930
95 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
1,845
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Main Street over East Birch Creek is a prestressed concrete slab carrying West Main Street over East Birch Creek in Umatilla County, Oregon. It was built in 1930, so it is 95 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 5 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 1,845 vehicles a day, roughly 5% of them trucks, projected to reach 2,180 by 2025. The structure is 44 ft (13.4 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWest Main Street
CrossesEast Birch Creek
Location0.05 MI E of HWY 395
RouteCity Street 0
StateOregon
Coordinates45.48277, -118.83432
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width72 ft (22 m)
Roadway width70 ft (21.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,845 (2020)
Projected traffic2,180 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 West Main Street over East Birch Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is West Main Street over East Birch 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 2023.

How much traffic does West Main Street over East Birch Creek carry?

About 1,845 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is West Main Street over East Birch Creek?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 72 ft wide.

Who owns West Main Street over East Birch Creek?

It is owned by the City or Municipal Highway Agency.