US Bridges

US 12 over Pataha CR

Poor

Garfield County, Washington · 2.0 E Columbia CO · Structure no. 0000422A0000000

Built
1920
105 years old
Condition
Poor
inspected March 2024
Type
Arch - Deck
Concrete
Length
60 ft
1 main span
Daily traffic
1,889
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Pataha CR is a concrete arch - deck carrying US 12 over Pataha CR in Garfield County, Washington. It was built in 1920, so it is 105 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,889 vehicles a day, roughly 21% of them trucks, projected to reach 2,034 by 2039. The structure is 60 ft (18.3 m) long and 26 ft wide. If it were closed, the detour would be 88.2 mi (142 km).

Location

Open in Google Maps
CarriesUS 12
CrossesPataha CR
Location2.0 E Columbia CO
RouteU.S. Route 12
CountyGarfield County
StateWashington
Coordinates46.52528, -117.82664
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating63.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,889 (2023)
Projected traffic2,034 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed88.2 mi (142 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$855,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Pataha CR built?

It was built in 1920, making it 105 years old in 2025.

What condition is US 12 over Pataha CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does US 12 over Pataha CR carry?

About 1,889 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 12 over Pataha CR?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 26 ft wide.

Who owns US 12 over Pataha CR?

It is owned by the State Highway Agency.