US Bridges

River Oaks RD over Darain Bayou

Good

Ascension Parish, Louisiana · 0.3 Mi.N. of LA 73 · Structure no. 610300000610405

Built
2020
5 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
30
2020 count
Owner
County
County Highway Agency

About this bridge

River Oaks RD over Darain Bayou is a concrete culvert carrying River Oaks RD over Darain Bayou in Ascension Parish, Louisiana. It was built in 2020, so it is 5 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 30 vehicles a day, projected to reach 33 by 2040. The structure is 23 ft (7 m) long and 25 ft wide.

CarriesRiver Oaks RD
CrossesDarain Bayou
Location0.3 Mi.N. of LA 73
RouteCounty Highway 0
Coordinates30.22762, -91.00592
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadGreater than HL 93
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width25 ft (7.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic33 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 River Oaks RD over Darain Bayou built?

It was built in 2020, making it 5 years old in 2025.

What condition is River Oaks RD over Darain 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 January 2023.

How much traffic does River Oaks RD over Darain Bayou carry?

About 30 vehicles per day (2020 count).

How long is River Oaks RD over Darain Bayou?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 25 ft wide.

Who owns River Oaks RD over Darain Bayou?

It is owned by the County Highway Agency.