LA0408 over Blackwater Bayou
East Baton Rouge Parish, Louisiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- LA0408 over Blackwater Bayou in East Baton Rouge Parish, Louisiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1988, making it 37 years old at the 2025 inventory.
- It carries about 26,976 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 230 of the 549 inventoried bridges in East Baton Rouge Parish rated good (41.9%); 103 (18.8%) 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 April 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 → (30.53547, -91.08156)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 151 ft |
| Location | 0.4 Mi. E. of LA 410 |
| NBI structure number | 611702550203931 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in East Baton Rouge Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I0010 over Wards Creek | 1967 | 201,563 | Fair |
| I0010 over Washington Street | 1963 | 197,070 | Fair |
| I0010 over Mississippi River | 1968 | 197,070 | Fair |
| I0010 over La 30 & City Streets | 1967 | 197,070 | Fair |
| I0010 over I-10 to I-110 S.B. | 1967 | 197,070 | Fair |
| I0010 over College Drive | 1967 | 195,220 | Fair |
All bridges nearby: East Baton Rouge Parish, LA bridge conditions · every bridge in East Baton Rouge Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.