US Bridges

Kingsbury Road over Colockum Creek

Good

Chelan County, Washington · 0.1 MI from Colockum Rd. · Structure no. 088035000000000

Built
2009
16 years old, rebuilt 2016
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
21
2019 count
Owner
County
County Highway Agency

About this bridge

Kingsbury Road over Colockum Creek is a steel stringer/multi-beam or girder carrying Kingsbury Road over Colockum Creek in Chelan County, Washington. It was built in 2009 and reconstructed in 2016, so it is 16 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 21 vehicles a day, roughly 10% of them trucks, projected to reach 26 by 2043. The structure is 44 ft (13.4 m) long and 26 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

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CarriesKingsbury Road
CrossesColockum Creek
Location0.1 MI from Colockum Rd.
RouteCounty Highway 15400
CountyChelan County
StateWashington
Coordinates47.29014, -120.16264
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating82 US tons
Inventory rating62.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2019)
Projected traffic26 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$543,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Kingsbury Road over Colockum Creek built?

It was built in 2009, making it 16 years old in 2025. It was reconstructed in 2016.

What condition is Kingsbury Road over Colockum 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 2023.

How much traffic does Kingsbury Road over Colockum Creek carry?

About 21 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Kingsbury Road over Colockum Creek?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 26 ft wide.

Who owns Kingsbury Road over Colockum Creek?

It is owned by the County Highway Agency.