US Bridges

Schafer Boom Road over Smith Canal

PoorPosted for load

Grays Harbor County, Washington · 0.4 S JCT 6292 · Structure no. 080886000000000

Built
1978
47 years old
Condition
Poor
inspected March 2024
Type
Slab
Prestressed Concrete
Length
94 ft
3 main spans
Daily traffic
43
2023 count
Owner
County
County Highway Agency

About this bridge

Schafer Boom Road over Smith Canal is a prestressed concrete slab carrying Schafer Boom Road over Smith Canal in Grays Harbor County, Washington. It was built in 1978, so it is 47 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 43 vehicles a day, roughly 5% of them trucks, projected to reach 46 by 2039. The structure is 94 ft (28.6 m) long and 12 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSchafer Boom Road
CrossesSmith Canal
Location0.4 S JCT 6292
RouteCounty Highway 62790
Coordinates46.97597, -123.56468
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.1 US tons
Inventory rating16.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length94 ft (28.6 m)
Longest span31 ft (9.5 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43 (2023)
Projected traffic46 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Schafer Boom Road over Smith Canal built?

It was built in 1978, making it 47 years old in 2025.

What condition is Schafer Boom Road over Smith Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Schafer Boom Road over Smith Canal carry?

About 43 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Schafer Boom Road over Smith Canal?

The structure is 94 ft (28.6 m) long with a longest span of 31 ft (9.5 m) and a deck 12 ft wide.

Who owns Schafer Boom Road over Smith Canal?

It is owned by the County Highway Agency.