I0049 over LA 478
GoodNatchitoches Parish, Louisiana · I-49 over LA478 · Structure no. 083504550623812
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 290 ft
- 2 main spans
- Daily traffic
- 28,142
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I0049 over LA 478 is a prestressed concrete continuous stringer/multi-beam or girder carrying I0049 over LA 478 in Natchitoches Parish, Louisiana. It was built in 1986, so it is 39 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 28,142 vehicles a day, roughly 30% of them trucks, projected to reach 30,956 by 2041. The structure is 290 ft (88.4 m) long and 43 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I0049 over LA 478 built?
It was built in 1986, making it 39 years old in 2025.
What condition is I0049 over LA 478 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 2024.
How much traffic does I0049 over LA 478 carry?
About 28,142 vehicles per day (2021 count), of which roughly 30% are trucks.
How long is I0049 over LA 478?
The structure is 290 ft (88.4 m) long with a longest span of 90 ft (27.4 m) and a deck 43 ft wide.
Who owns I0049 over LA 478?
It is owned by the State Highway Agency.