US Bridges

Mayo Road over Morrison Canal

FairPosted for load

Orleans Parish, Louisiana · 0.0 Mi.N.Of Morrison · Structure no. 023630019900031

Built
1960
65 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
49 ft
3 main spans
Daily traffic
—
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mayo Road over Morrison Canal is a concrete slab carrying Mayo Road over Morrison Canal in Orleans Parish, Louisiana. It was built in 1960, so it is 65 years old, older 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. Its operating status is: posted for load restriction.

No traffic count is recorded. The structure is 49 ft (14.9 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMayo Road
CrossesMorrison Canal
Location0.0 Mi.N.Of Morrison
RouteCounty Highway 0
CountyOrleans Parish
StateLouisiana
Coordinates30.03237, -90.00479
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span19 ft (5.8 m)
Deck width39 ft (12 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$196,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mayo Road over Morrison Canal built?

It was built in 1960, making it 65 years old in 2025.

What condition is Mayo Road over Morrison Canal 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 Mayo Road over Morrison Canal carry?

No traffic count is recorded for this structure.

How long is Mayo Road over Morrison Canal?

The structure is 49 ft (14.9 m) long with a longest span of 19 ft (5.8 m) and a deck 39 ft wide.

Who owns Mayo Road over Morrison Canal?

It is owned by the City or Municipal Highway Agency.