US Bridges

US0090 over LA 20 SP RR Drain Cana

Good

Terrebonne Parish, Louisiana · Ramp to LA 20 · Structure no. 025504240706007

Built
1994
31 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,615 ft
2 main spans
Daily traffic
3,007
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over LA 20 SP RR Drain Cana is a prestressed concrete stringer/multi-beam or girder carrying US0090 over LA 20 SP RR Drain Cana in Terrebonne Parish, Louisiana. It was built in 1994, so it is 31 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 3,007 vehicles a day, roughly 18% of them trucks, projected to reach 3,307 by 2041. The structure is 1,615 ft (492.3 m) long and 28 ft wide.

CarriesUS0090
CrossesLA 20 SP RR Drain Cana
LocationRamp to LA 20
RouteU.S. Route 90
Coordinates29.69076, -90.9843
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+22 approach)
Design loadHS 20
Structure length1,615 ft (492.3 m)
Longest span82 ft (25 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,007 (2021)
Projected traffic3,307 by 2041
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemYes

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 US0090 over LA 20 SP RR Drain Cana built?

It was built in 1994, making it 31 years old in 2025.

What condition is US0090 over LA 20 SP RR Drain Cana 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 2023.

How much traffic does US0090 over LA 20 SP RR Drain Cana carry?

About 3,007 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is US0090 over LA 20 SP RR Drain Cana?

The structure is 1,615 ft (492.3 m) long with a longest span of 82 ft (25 m) and a deck 28 ft wide.

Who owns US0090 over LA 20 SP RR Drain Cana?

It is owned by the State Highway Agency.