Mayo Road over Morrison Canal
Orleans Parish, Louisiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mayo Road over Morrison Canal in Orleans Parish, Louisiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- Its listed owner is a city or municipal highway agency.
- It is one of 176 of the 381 inventoried bridges in Orleans Parish rated fair (46.2%); 41 (10.8%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (30.03237, -90.00479)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 48 ft |
| Location | 0.0 Mi.n.of Morrison |
| NBI structure number | 023630019900031 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in Orleans Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I0010 over Inner Harbor /city Sts | 1966 | 181,400 | Fair |
| I0010 over Gravier Street | 1969 | 172,504 | Fair |
| I0010 over Metairie Road | 1962 | 169,357 | Fair |
| Us0090-b over R/R City Sts | 1960 | 154,311 | Fair |
| Us0090-b over City Streets | 1995 | 154,311 | Fair |
| Us0090-b over Mississippi River | 1985 | 154,311 | Poor |
All bridges nearby: Orleans Parish, LA bridge conditions · every bridge in Orleans Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.