US Bridges

US0090 over Drainage Canal No 1

Fair

Terrebonne Parish, Louisiana · 1.0 MI E of LA 311 · Structure no. 025504240715902

Built
1987
38 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
125 ft
4 main spans
Daily traffic
11,661
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over Drainage Canal No 1 is a concrete slab carrying US0090 over Drainage Canal No 1 in Terrebonne Parish, Louisiana. It was built in 1987, so it is 38 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,661 vehicles a day, roughly 18% of them trucks, projected to reach 12,827 by 2041. The structure is 125 ft (38.1 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesUS0090
CrossesDrainage Canal No 1
Location1.0 MI E of LA 311
RouteU.S. Route 90
CountyTerrebonne Parish
StateLouisiana
Coordinates29.67987, -90.7972
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span25 ft (7.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,661 (2021)
Projected traffic12,827 by 2041
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 Drainage Canal No 1 built?

It was built in 1987, making it 38 years old in 2025.

What condition is US0090 over Drainage Canal No 1 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does US0090 over Drainage Canal No 1 carry?

About 11,661 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is US0090 over Drainage Canal No 1?

The structure is 125 ft (38.1 m) long with a longest span of 25 ft (7.6 m) and a deck 43 ft wide.

Who owns US0090 over Drainage Canal No 1?

It is owned by the State Highway Agency.