US Bridges

LA0001 over Old River

Fair

Natchitoches Parish, Louisiana · 0.09 M. N. of S. Jct. LA · Structure no. 083500000080580

Built
2011
14 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
400 ft
10 main spans
Daily traffic
996
2021 count
Owner
State
State Highway Agency

About this bridge

LA0001 over Old River is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0001 over Old River in Natchitoches Parish, Louisiana. It was built in 2011, so it is 14 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 996 vehicles a day, roughly 14% of them trucks, projected to reach 1,095 by 2041. The structure is 400 ft (121.9 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLA0001
CrossesOld River
Location0.09 M. N. of S. Jct. LA
RouteState Highway 1
CountyNatchitoches Parish
StateLouisiana
Coordinates31.57324, -92.99472
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHL 93
Structure length400 ft (121.9 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic996 (2021)
Projected traffic1,095 by 2041
Trucks14%
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

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 LA0001 over Old River built?

It was built in 2011, making it 14 years old in 2025.

What condition is LA0001 over Old River 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 April 2024.

How much traffic does LA0001 over Old River carry?

About 996 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0001 over Old River?

The structure is 400 ft (121.9 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns LA0001 over Old River?

It is owned by the State Highway Agency.