US Bridges

Cox Lane over Bayou Santabarb

Good

Natchitoches Parish, Louisiana · 0.43 Mile South of LA 478 · Structure no. 083531332931591

Built
2001
24 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
96 ft
5 main spans
Daily traffic
52
2022 count
Owner
County
County Highway Agency

About this bridge

Cox Lane over Bayou Santabarb is a concrete slab carrying Cox Lane over Bayou Santabarb in Natchitoches Parish, Louisiana. It was built in 2001, so it is 24 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 52 vehicles a day, projected to reach 57 by 2042. The structure is 96 ft (29.3 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCox Lane
CrossesBayou Santabarb
Location0.43 Mile South of LA 478
RouteCounty Highway 0
CountyNatchitoches Parish
StateLouisiana
Coordinates31.55412, -93.2662
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length96 ft (29.3 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 traffic52 (2022)
Projected traffic57 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Cox Lane over Bayou Santabarb built?

It was built in 2001, making it 24 years old in 2025.

What condition is Cox Lane over Bayou Santabarb 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 Cox Lane over Bayou Santabarb carry?

About 52 vehicles per day (2022 count).

How long is Cox Lane over Bayou Santabarb?

The structure is 96 ft (29.3 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Cox Lane over Bayou Santabarb?

It is owned by the County Highway Agency.