US Bridges

L Road SW over Lat. RB5 Blk 82

Good

Grant County, Washington · Adams RD 0.9 S of 12 SW · Structure no. 084210000000000

Built
1990
35 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
875
2022 count
Owner
County
County Highway Agency

About this bridge

L Road SW over Lat. RB5 Blk 82 is a prestressed concrete stringer/multi-beam or girder carrying L Road SW over Lat. RB5 Blk 82 in Grant County, Washington. It was built in 1990, so it is 35 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 875 vehicles a day, roughly 35% of them trucks, projected to reach 1,500 by 2043. The structure is 45 ft (13.7 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesL Road SW
CrossesLat. RB5 Blk 82
LocationAdams RD 0.9 S of 12 SW
RouteCounty Highway 91017
Coordinates46.91562, -119.74934
Functional classRural Major Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating27.1 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length45 ft (13.7 m)
Longest span44 ft (13.4 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic875 (2022)
Projected traffic1,500 by 2043
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was L Road SW over Lat. RB5 Blk 82 built?

It was built in 1990, making it 35 years old in 2025.

What condition is L Road SW over Lat. RB5 Blk 82 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 L Road SW over Lat. RB5 Blk 82 carry?

About 875 vehicles per day (2022 count), of which roughly 35% are trucks.

How long is L Road SW over Lat. RB5 Blk 82?

The structure is 45 ft (13.7 m) long with a longest span of 44 ft (13.4 m) and a deck 36 ft wide.

Who owns L Road SW over Lat. RB5 Blk 82?

It is owned by the County Highway Agency.