US Bridges

12 TH Street over Pataha Creek

Good

Garfield County, Washington · 0.1 S US12 on 12th · Structure no. 085549000000000

Built
1980
45 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
200
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

12 TH Street over Pataha Creek is a prestressed concrete tee beam carrying 12 TH Street over Pataha Creek in Garfield County, Washington. It was built in 1980, so it is 45 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 5% of them trucks, projected to reach 220 by 2040. The structure is 82 ft (25 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries12 TH Street
CrossesPataha Creek
Location0.1 S US12 on 12th
RouteCity Street 12
Coordinates46.47244, -117.59452
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length82 ft (25 m)
Longest span80 ft (24.4 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic220 by 2040
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 statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 12 TH Street over Pataha Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is 12 TH Street over Pataha Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does 12 TH Street over Pataha Creek carry?

About 200 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 12 TH Street over Pataha Creek?

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.4 m) and a deck 36 ft wide.

Who owns 12 TH Street over Pataha Creek?

It is owned by the City or Municipal Highway Agency.