US Bridges

Ladiges RD over Bird Creek

Fair

Klickitat County, Washington · 1.0 S Yakima CO · Structure no. 086407000000000

Built
1997
28 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
41
2023 count
Owner
County
County Highway Agency

About this bridge

Ladiges RD over Bird Creek is a prestressed concrete channel beam carrying Ladiges RD over Bird Creek in Klickitat County, Washington. It was built in 1997, so it is 28 years old, younger than the Washington average of 49.8 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 41 vehicles a day, roughly 46% of them trucks, projected to reach 51 by 2045. The structure is 22 ft (6.7 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLadiges RD
CrossesBird Creek
Location1.0 S Yakima CO
RouteCounty Highway 18720
Coordinates46.0303, -121.2977
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2023)
Projected traffic51 by 2045
Trucks46%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ladiges RD over Bird Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Ladiges RD over Bird 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 September 2024.

How much traffic does Ladiges RD over Bird Creek carry?

About 41 vehicles per day (2023 count), of which roughly 46% are trucks.

How long is Ladiges RD over Bird Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns Ladiges RD over Bird Creek?

It is owned by the County Highway Agency.