US Bridges

W Lake Washington over Canal

Good

Washington County, Mississippi · Sec 15 T14N R 8W B · Structure no. SA7600000000012

Built
1978
47 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
240 ft
6 main spans
Daily traffic
310
2021 count
Owner
County
County Highway Agency

About this bridge

W Lake Washington over Canal is a prestressed concrete stringer/multi-beam or girder carrying W Lake Washington over Canal in Washington County, Mississippi. It was built in 1978, so it is 47 years old, older than the Mississippi average of 38.9 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 310 vehicles a day, roughly 8% of them trucks, projected to reach 434 by 2041. The structure is 240 ft (73.2 m) long and 31 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesW Lake Washington
CrossesCanal
LocationSec 15 T14N R 8W B
RouteCounty Highway 975
Coordinates33.05979, -91.04894
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic310 (2021)
Projected traffic434 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W Lake Washington over Canal built?

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

What condition is W Lake Washington over Canal 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 April 2023.

How much traffic does W Lake Washington over Canal carry?

About 310 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is W Lake Washington over Canal?

The structure is 240 ft (73.2 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns W Lake Washington over Canal?

It is owned by the County Highway Agency.