US Bridges

LA0933 over Roddy Bayou

Good

Ascension Parish, Louisiana · 0.9 Mi. S. of LA 42 · Structure no. 610308031803571

Built
2007
18 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
6,131
2021 count
Owner
State
State Highway Agency

About this bridge

LA0933 over Roddy Bayou is a concrete slab carrying LA0933 over Roddy Bayou in Ascension Parish, Louisiana. It was built in 2007, so it is 18 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 6,131 vehicles a day, roughly 11% of them trucks, projected to reach 6,744 by 2041. The structure is 57 ft (17.4 m) long and 43 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesLA0933
CrossesRoddy Bayou
Location0.9 Mi. S. of LA 42
RouteState Highway 933
CountyAscension Parish
StateLouisiana
Coordinates30.32722, -90.88019
Functional classUrban Collector

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 inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,131 (2021)
Projected traffic6,744 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 LA0933 over Roddy Bayou built?

It was built in 2007, making it 18 years old in 2025.

What condition is LA0933 over Roddy Bayou 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 October 2024.

How much traffic does LA0933 over Roddy Bayou carry?

About 6,131 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0933 over Roddy Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 43 ft wide.

Who owns LA0933 over Roddy Bayou?

It is owned by the State Highway Agency.