US Bridges

Many Marthaville over Bayou Dupont Tributary

Good

Natchitoches Parish, Louisiana · 1.64 M. S. of Main St. M · Structure no. 083531432932471

Built
1997
28 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
205
2022 count
Owner
County
County Highway Agency

About this bridge

Many Marthaville over Bayou Dupont Tributary is a concrete slab carrying Many Marthaville over Bayou Dupont Tributary in Natchitoches Parish, Louisiana. It was built in 1997, so it is 28 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 205 vehicles a day, projected to reach 225 by 2042. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesMany Marthaville
CrossesBayou Dupont Tributary
Location1.64 M. S. of Main St. M
RouteCounty Highway 0
CountyNatchitoches Parish
StateLouisiana
Coordinates31.72048, -93.4116
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 inspectionJanuary 2023
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 alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45.3 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 width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2022)
Projected traffic225 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Many Marthaville over Bayou Dupont Tributary built?

It was built in 1997, making it 28 years old in 2025.

What condition is Many Marthaville over Bayou Dupont Tributary 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 January 2023.

How much traffic does Many Marthaville over Bayou Dupont Tributary carry?

About 205 vehicles per day (2022 count).

How long is Many Marthaville over Bayou Dupont Tributary?

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 Many Marthaville over Bayou Dupont Tributary?

It is owned by the County Highway Agency.