LA 421 over Mid Fk Thom CR TR
GoodWest Feliciana Parish, Louisiana · 1.1 M E of LA 967 · Structure no. 616300000616314
- Built
- 2023
- 2 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete
- Length
- 120 ft
- 6 main spans
- Daily traffic
- 343
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
LA 421 over Mid Fk Thom CR TR is a concrete slab carrying LA 421 over Mid Fk Thom CR TR in West Feliciana Parish, Louisiana. It was built in 2023, so it is 2 years old, younger than the Louisiana average of 43 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 343 vehicles a day, roughly 10% of them trucks, projected to reach 377 by 2043. The structure is 120 ft (36.6 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was LA 421 over Mid Fk Thom CR TR built?
It was built in 2023, making it 2 years old in 2025.
What condition is LA 421 over Mid Fk Thom CR TR in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does LA 421 over Mid Fk Thom CR TR carry?
About 343 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is LA 421 over Mid Fk Thom CR TR?
The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.
Who owns LA 421 over Mid Fk Thom CR TR?
It is owned by the State Highway Agency.