US Bridges

SR 14 over SR 500 / Union ST

Good

Clark County, Washington · 8.6 E JCT I-205 · Structure no. 0018105B0000000

Built
2012
13 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
11,217
2023 count
Owner
State
State Highway Agency

About this bridge

SR 14 over SR 500 / Union ST is a prestressed concrete stringer/multi-beam or girder carrying SR 14 over SR 500 / Union ST in Clark County, Washington. It was built in 2012, so it is 13 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,217 vehicles a day, roughly 8% of them trucks, projected to reach 17,366 by 2039. The structure is 98 ft (29.9 m) long and 80 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 14
CrossesSR 500 / Union ST
Location8.6 E JCT I-205
RouteState Highway 14
CountyClark County
StateWashington
Coordinates45.58016, -122.38586
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating56.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length98 ft (29.9 m)
Longest span98 ft (29.9 m)
Deck width80 ft (24.4 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,217 (2023)
Projected traffic17,366 by 2039
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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$3.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 14 over SR 500 / Union ST built?

It was built in 2012, making it 13 years old in 2025.

What condition is SR 14 over SR 500 / Union ST 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 February 2023.

How much traffic does SR 14 over SR 500 / Union ST carry?

About 11,217 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 14 over SR 500 / Union ST?

The structure is 98 ft (29.9 m) long with a longest span of 98 ft (29.9 m) and a deck 80 ft wide.

Who owns SR 14 over SR 500 / Union ST?

It is owned by the State Highway Agency.