US Bridges

US 197 (hwy 004) over Tygh Creek

Fair

Wasco County, Oregon · 012 MI S Tygh Valley · Structure no. 08994 004 03525

Built
1962
63 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
151 ft
3 main spans
Daily traffic
1,403
2022 count
Owner
State
State Highway Agency

About this bridge

US 197 (hwy 004) over Tygh Creek is a prestressed concrete stringer/multi-beam or girder carrying US 197 (hwy 004) over Tygh Creek in Wasco County, Oregon. It was built in 1962, so it is 63 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 1,403 vehicles a day, roughly 17% of them trucks, projected to reach 1,600 by 2042. The structure is 151 ft (46 m) long and 35 ft wide. If it were closed, the detour would be 28.6 mi (46 km).

Location

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CarriesUS 197 (hwy 004)
CrossesTygh Creek
Location012 MI S Tygh Valley
RouteU.S. Route 197
CountyWasco County
StateOregon
Coordinates45.24104, -121.15195
Functional classRural 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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length151 ft (46 m)
Longest span64 ft (19.5 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,403 (2022)
Projected traffic1,600 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28.6 mi (46 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 197 (hwy 004) over Tygh Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is US 197 (hwy 004) over Tygh 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 October 2023.

How much traffic does US 197 (hwy 004) over Tygh Creek carry?

About 1,403 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is US 197 (hwy 004) over Tygh Creek?

The structure is 151 ft (46 m) long with a longest span of 64 ft (19.5 m) and a deck 35 ft wide.

Who owns US 197 (hwy 004) over Tygh Creek?

It is owned by the State Highway Agency.