18TH St at Desiard over Drainage Canal

Ouachita Parish, Louisiana · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• 18TH St at Desiard over Drainage Canal in Ouachita Parish, Louisiana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
• It was built in 1996, making it 29 years old at the 2025 inventory.
• It carries about 100,000 vehicles a day (traffic count year 1979).
• Its listed owner is a city or municipal highway agency.
• It is one of 78 of the 331 inventoried bridges in Ouachita Parish rated good (23.6%); 42 (12.7%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its condition class and component ratings are unchanged from the 2024 inventory.
• Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (32.51103, -92.10282)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.

Busiest bridges in Ouachita Parish

All bridges nearby: Ouachita Parish, LA bridge conditions · every bridge in Ouachita Parish · Louisiana bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.