US Bridges

School Land Road over Overflow Channel

Good

Thurston County, Washington · 1.5NW Rochester · Structure no. 084863000000000

Built
1981
44 years old
Condition
Good
inspected March 2023
Type
Culvert
Steel
Length
25 ft
2 main spans
Daily traffic
381
2020 count
Owner
County
County Highway Agency

About this bridge

School Land Road over Overflow Channel is a steel culvert carrying School Land Road over Overflow Channel in Thurston County, Washington. It was built in 1981, so it is 44 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 381 vehicles a day, roughly 10% of them trucks, projected to reach 576 by 2042. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSchool Land Road
CrossesOverflow Channel
Location1.5NW Rochester
RouteCounty Highway 14445
CountyThurston County
StateWashington
Coordinates46.83024, -123.12237
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic381 (2020)
Projected traffic576 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 relocation of road
Estimated improvement cost$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was School Land Road over Overflow Channel built?

It was built in 1981, making it 44 years old in 2025.

What condition is School Land Road over Overflow Channel 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 March 2023.

How much traffic does School Land Road over Overflow Channel carry?

About 381 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is School Land Road over Overflow Channel?

The structure is 25 ft (7.6 m) long with a longest span of 11 ft (3.4 m).

Who owns School Land Road over Overflow Channel?

It is owned by the County Highway Agency.