LA0421 over Thom Creek
PoorPosted for loadWest Feliciana Parish, Louisiana · 0.8 M E of LA 957&LA 421 · Structure no. 616308630207791
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected January 2024
- Type
- Slab
- Concrete
- Length
- 95 ft
- 5 main spans
- Daily traffic
- 739
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
LA0421 over Thom Creek is a concrete slab carrying LA0421 over Thom Creek in West Feliciana Parish, Louisiana. It was built in 1968, so it is 57 years old, older than the Louisiana average of 43 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 739 vehicles a day, roughly 10% of them trucks, projected to reach 812 by 2041. The structure is 95 ft (29 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was LA0421 over Thom Creek built?
It was built in 1968, making it 57 years old in 2025.
What condition is LA0421 over Thom Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.
How much traffic does LA0421 over Thom Creek carry?
About 739 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is LA0421 over Thom Creek?
The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.
Who owns LA0421 over Thom Creek?
It is owned by the State Highway Agency.