US Bridges

Adams Road over Lateral. Block 73

Good

Grant County, Washington · Adams Road at Martin · Structure no. 088920000000000

Built
2017
8 years old
Condition
Good
inspected December 2024
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
247
2021 count
Owner
County
County Highway Agency

About this bridge

Adams Road over Lateral. Block 73 is a prestressed concrete slab carrying Adams Road over Lateral. Block 73 in Grant County, Washington. It was built in 2017, so it is 8 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 247 vehicles a day, roughly 21% of them trucks, projected to reach 360 by 2043. The structure is 34 ft (10.4 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesAdams Road
CrossesLateral. Block 73
LocationAdams Road at Martin
RouteCounty Highway 32470
CountyGrant County
StateWashington
Coordinates47.26117, -119.76841
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic247 (2021)
Projected traffic360 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$581,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Adams Road over Lateral. Block 73 built?

It was built in 2017, making it 8 years old in 2025.

What condition is Adams Road over Lateral. Block 73 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 December 2024.

How much traffic does Adams Road over Lateral. Block 73 carry?

About 247 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is Adams Road over Lateral. Block 73?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 36 ft wide.

Who owns Adams Road over Lateral. Block 73?

It is owned by the County Highway Agency.