US Bridges

Vantage RD over Frenchman Springs

Good

Grant County, Washington · Vantage RD .9 W Silica · Structure no. 082837000000000

Built
1931
94 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
41 ft
1 main span
Daily traffic
169
2021 count
Owner
County
County Highway Agency

About this bridge

Vantage RD over Frenchman Springs is a concrete slab carrying Vantage RD over Frenchman Springs in Grant County, Washington. It was built in 1931, so it is 94 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.

It carries about 169 vehicles a day, roughly 14% of them trucks, projected to reach 350 by 2043. The structure is 41 ft (12.5 m) long and 6 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesVantage RD
CrossesFrenchman Springs
LocationVantage RD .9 W Silica
RouteCounty Highway 30520
Coordinates47.03044, -119.95756
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span27 ft (8.2 m)
Deck width6 ft (1.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic169 (2021)
Projected traffic350 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed98.8 mi (159 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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Vantage RD over Frenchman Springs built?

It was built in 1931, making it 94 years old in 2025.

What condition is Vantage RD over Frenchman Springs 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 January 2023.

How much traffic does Vantage RD over Frenchman Springs carry?

About 169 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Vantage RD over Frenchman Springs?

The structure is 41 ft (12.5 m) long with a longest span of 27 ft (8.2 m) and a deck 6 ft wide.

Who owns Vantage RD over Frenchman Springs?

It is owned by the County Highway Agency.