US Bridges

Dillingham Drive over Pierremont Ditch

Good

Caddo Parish, Louisiana · 0.24 MI N. of Oakhill St. · Structure no. 040932270934461

Built
1996
29 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
—
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dillingham Drive over Pierremont Ditch is a concrete culvert carrying Dillingham Drive over Pierremont Ditch in Caddo Parish, Louisiana. It was built in 1996, so it is 29 years old, younger than the Louisiana average of 43 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.

No traffic count is recorded. The structure is 21 ft (6.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesDillingham Drive
CrossesPierremont Ditch
Location0.24 MI N. of Oakhill St.
RouteCounty Highway 0
Coordinates32.45061, -93.7439
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width40 ft (12.2 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dillingham Drive over Pierremont Ditch built?

It was built in 1996, making it 29 years old in 2025.

What condition is Dillingham Drive over Pierremont Ditch 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 Dillingham Drive over Pierremont Ditch carry?

No traffic count is recorded for this structure.

How long is Dillingham Drive over Pierremont Ditch?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 40 ft wide.

Who owns Dillingham Drive over Pierremont Ditch?

It is owned by the City or Municipal Highway Agency.