Milldale Rd over Drainage Canal
East Baton Rouge Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Milldale Rd over Drainage Canal in East Baton Rouge Parish, Louisiana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 377 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 103 of the 549 inventoried bridges in East Baton Rouge Parish rated poor (18.8%); 103 (18.8%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (30.66511, -91.00551)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 3 | Serious condition |
Bridge details
| Structure | Concrete slab |
| Length | about 113 ft |
| Location | 2.0 M W of La 409 |
| NBI structure number | 611730398910001 |
| Condition class | Poor |
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.