US Bridges

LA1222 over Mallard Bayou

Fair

Natchitoches Parish, Louisiana · 2.13 Mi. E of Int LA485 · Structure no. 083508350402131

Built
1994
31 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
94
2021 count
Owner
State
State Highway Agency

About this bridge

LA1222 over Mallard Bayou is a concrete slab carrying LA1222 over Mallard Bayou in Natchitoches Parish, Louisiana. It was built in 1994, so it is 31 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 94 vehicles a day, roughly 10% of them trucks, projected to reach 103 by 2041. The structure is 100 ft (30.5 m) long and 33 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA1222
CrossesMallard Bayou
Location2.13 Mi. E of Int LA485
RouteState Highway 1222
CountyNatchitoches Parish
StateLouisiana
Coordinates31.74645, -93.2691
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94 (2021)
Projected traffic103 by 2041
Trucks10%
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

OwnerState Highway Agency
Maintained byState 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 LA1222 over Mallard Bayou built?

It was built in 1994, making it 31 years old in 2025.

What condition is LA1222 over Mallard 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 February 2024.

How much traffic does LA1222 over Mallard Bayou carry?

About 94 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA1222 over Mallard Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns LA1222 over Mallard Bayou?

It is owned by the State Highway Agency.