US Bridges

Main ST Union Gap over Wide Hollow Creek

GoodPosted for load

Yakima County, Washington · 15.0 N JCT SR 22 · Structure no. 0002661C0000000

Built
1941
84 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
14,370
2023 count
Owner
State
State Highway Agency

About this bridge

Main ST Union Gap over Wide Hollow Creek is a concrete slab carrying Main ST Union Gap over Wide Hollow Creek in Yakima County, Washington. It was built in 1941, so it is 84 years old, older 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. Its operating status is: posted for load restriction.

It carries about 14,370 vehicles a day, roughly 7% of them trucks, projected to reach 17,174 by 2043. The structure is 23 ft (7 m) long and 64 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMain ST Union Gap
CrossesWide Hollow Creek
Location15.0 N JCT SR 22
RouteCity Street 0
Coordinates46.54353, -120.47606
Functional classUrban Other Principal Arterial

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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width64 ft (19.6 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,370 (2023)
Projected traffic17,174 by 2043
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$743,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST Union Gap over Wide Hollow Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is Main ST Union Gap over Wide Hollow 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 April 2024.

How much traffic does Main ST Union Gap over Wide Hollow Creek carry?

About 14,370 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Main ST Union Gap over Wide Hollow Creek?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 64 ft wide.

Who owns Main ST Union Gap over Wide Hollow Creek?

It is owned by the State Highway Agency.