US Bridges

Kittitas HWY over Town Ditch

Good

Kittitas County, Washington · .31 West Ferguson RD · Structure no. 088738000000000

Built
2015
10 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
4,356
2023 count
Owner
County
County Highway Agency

About this bridge

Kittitas HWY over Town Ditch is a concrete slab carrying Kittitas HWY over Town Ditch in Kittitas County, Washington. It was built in 2015, so it is 10 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,356 vehicles a day, roughly 17% of them trucks, projected to reach 11,543 by 2043. The structure is 40 ft (12.2 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKittitas HWY
CrossesTown Ditch
Location.31 West Ferguson RD
RouteCounty Highway 96951
CountyKittitas County
StateWashington
Coordinates46.98542, -120.47376
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating47.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,356 (2023)
Projected traffic11,543 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Kittitas HWY over Town Ditch built?

It was built in 2015, making it 10 years old in 2025.

What condition is Kittitas HWY over Town Ditch 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 November 2024.

How much traffic does Kittitas HWY over Town Ditch carry?

About 4,356 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Kittitas HWY over Town Ditch?

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m) and a deck 36 ft wide.

Who owns Kittitas HWY over Town Ditch?

It is owned by the County Highway Agency.