US Bridges

LA0001 over Bayou Pierre

Fair

Natchitoches Parish, Louisiana · 1.0 MI N of JCT LA 3191 · Structure no. 083500530505981

Built
1975
50 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
580 ft
12 main spans
Daily traffic
1,988
2021 count
Owner
State
State Highway Agency

About this bridge

LA0001 over Bayou Pierre is a prestressed concrete stringer/multi-beam or girder carrying LA0001 over Bayou Pierre in Natchitoches Parish, Louisiana. It was built in 1975, so it is 50 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.

It carries about 1,988 vehicles a day, roughly 15% of them trucks, projected to reach 2,186 by 2041. The structure is 580 ft (176.8 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesLA0001
CrossesBayou Pierre
Location1.0 MI N of JCT LA 3191
RouteState Highway 1
CountyNatchitoches Parish
StateLouisiana
Coordinates31.80147, -93.1627
Functional classRural Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length580 ft (176.8 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,988 (2021)
Projected traffic2,186 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0001 over Bayou Pierre built?

It was built in 1975, making it 50 years old in 2025.

What condition is LA0001 over Bayou Pierre 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 June 2023.

How much traffic does LA0001 over Bayou Pierre carry?

About 1,988 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0001 over Bayou Pierre?

The structure is 580 ft (176.8 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns LA0001 over Bayou Pierre?

It is owned by the State Highway Agency.