US Bridges

Twin Oak DR over Cypress Bayou

Good

East Baton Rouge Parish, Louisiana · 0.7 M N of LA 19 · Structure no. 611700000611732

Built
2023
2 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
120 ft
5 main spans
Daily traffic
1,961
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Twin Oak DR over Cypress Bayou is a concrete slab carrying Twin Oak DR over Cypress Bayou in East Baton Rouge Parish, Louisiana. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,961 vehicles a day, projected to reach 2,157 by 2042. The structure is 120 ft (36.6 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTwin Oak DR
CrossesCypress Bayou
Location0.7 M N of LA 19
RouteCity Street 0
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.60973, -91.16756
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span24 ft (7.3 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,961 (2022)
Projected traffic2,157 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Twin Oak DR over Cypress Bayou built?

It was built in 2023, making it 2 years old in 2025.

What condition is Twin Oak DR over Cypress 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 August 2023.

How much traffic does Twin Oak DR over Cypress Bayou carry?

About 1,961 vehicles per day (2022 count).

How long is Twin Oak DR over Cypress Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 24 ft (7.3 m) and a deck 31 ft wide.

Who owns Twin Oak DR over Cypress Bayou?

It is owned by the City or Municipal Highway Agency.