US Bridges

Section 28 RD over Martin Bayou

Fair

St. Martin Parish, Louisiana · 1.6 MI E of LA 3039 · Structure no. 035030134914721

Built
2003
22 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
608
2020 count
Owner
County
County Highway Agency

About this bridge

Section 28 RD over Martin Bayou is a concrete slab carrying Section 28 RD over Martin Bayou in St. Martin Parish, Louisiana. It was built in 2003, so it is 22 years old, younger 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 608 vehicles a day, projected to reach 668 by 2040. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSection 28 RD
CrossesMartin Bayou
Location1.6 MI E of LA 3039
RouteCounty Highway 0
CountySt. Martin Parish
StateLouisiana
Coordinates30.22445, -91.78753
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.1 US tons
Inventory rating23.9 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 width27 ft (8.2 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic608 (2020)
Projected traffic668 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Section 28 RD over Martin Bayou built?

It was built in 2003, making it 22 years old in 2025.

What condition is Section 28 RD over Martin Bayou 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 October 2024.

How much traffic does Section 28 RD over Martin Bayou carry?

About 608 vehicles per day (2020 count).

How long is Section 28 RD over Martin Bayou?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Section 28 RD over Martin Bayou?

It is owned by the County Highway Agency.