US Bridges

Williamson Way over Summer Grove Ditch

Fair

Caddo Parish, Louisiana · 1.61NI E of US HWY · Structure no. 040932229934751

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
4,404
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Williamson Way over Summer Grove Ditch is a concrete slab carrying Williamson Way over Summer Grove Ditch in Caddo Parish, Louisiana. It was built in 1972, so it is 53 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,404 vehicles a day, projected to reach 4,844 by 2039. The structure is 100 ft (30.5 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesWilliamson Way
CrossesSummer Grove Ditch
Location1.61NI E of US HWY
RouteCity Street 0
CountyCaddo Parish
StateLouisiana
Coordinates32.38178, -93.79111
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,404 (2019)
Projected traffic4,844 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Williamson Way over Summer Grove Ditch built?

It was built in 1972, making it 53 years old in 2025.

What condition is Williamson Way over Summer Grove Ditch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Williamson Way over Summer Grove Ditch carry?

About 4,404 vehicles per day (2019 count).

How long is Williamson Way over Summer Grove Ditch?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns Williamson Way over Summer Grove Ditch?

It is owned by the City or Municipal Highway Agency.