US Bridges

Bull Run RD over Terr Laf Drainage Canal

FairPosted for load

Terrebonne Parish, Louisiana · 6.7 MI W of LA 311 · Structure no. 025529410905341

Built
1968
57 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
114 ft
6 main spans
Daily traffic
826
2020 count
Owner
County
County Highway Agency

About this bridge

Bull Run RD over Terr Laf Drainage Canal is a concrete slab carrying Bull Run RD over Terr Laf Drainage Canal in Terrebonne Parish, Louisiana. It was built in 1968, so it is 57 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 826 vehicles a day, projected to reach 908 by 2040. The structure is 114 ft (34.7 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBull Run RD
CrossesTerr Laf Drainage Canal
Location6.7 MI W of LA 311
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.68289, -90.89007
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic826 (2020)
Projected traffic908 by 2040
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

OwnerCounty Highway Agency
Maintained byCounty 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 Bull Run RD over Terr Laf Drainage Canal built?

It was built in 1968, making it 57 years old in 2025.

What condition is Bull Run RD over Terr Laf Drainage Canal 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 April 2023.

How much traffic does Bull Run RD over Terr Laf Drainage Canal carry?

About 826 vehicles per day (2020 count).

How long is Bull Run RD over Terr Laf Drainage Canal?

The structure is 114 ft (34.7 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns Bull Run RD over Terr Laf Drainage Canal?

It is owned by the County Highway Agency.