US Bridges

Tilac RD over Pont Brule Bayou

Good

St. Martin Parish, Louisiana · 0.9 Mi. NW of LA 354 · Structure no. 035030209915601

Built
1985
40 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
58
2021 count
Owner
County
County Highway Agency

About this bridge

Tilac RD over Pont Brule Bayou is a concrete slab carrying Tilac RD over Pont Brule Bayou in St. Martin Parish, Louisiana. It was built in 1985, so it is 40 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.

It carries about 58 vehicles a day, projected to reach 63 by 2041. The structure is 95 ft (29 m) long and 23 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesTilac RD
CrossesPont Brule Bayou
Location0.9 Mi. NW of LA 354
RouteCounty Highway 0
Coordinates30.3454, -91.93118
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.8 US tons
Inventory rating47.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2021)
Projected traffic63 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Tilac RD over Pont Brule Bayou built?

It was built in 1985, making it 40 years old in 2025.

What condition is Tilac RD over Pont Brule Bayou 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 October 2024.

How much traffic does Tilac RD over Pont Brule Bayou carry?

About 58 vehicles per day (2021 count).

How long is Tilac RD over Pont Brule Bayou?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 23 ft wide.

Who owns Tilac RD over Pont Brule Bayou?

It is owned by the County Highway Agency.