Smithport Lake RD over I-49
GoodDe Soto Parish, Louisiana · 2.81 MI N of US 84 Inter · Structure no. 041604550715951
- Built
- 1985
- 40 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 396 ft
- 3 main spans
- Daily traffic
- 1,680
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Smithport Lake RD over I-49 is a prestressed concrete continuous stringer/multi-beam or girder carrying Smithport Lake RD over I-49 in De Soto Parish, Louisiana. It was built in 1985, so it is 40 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 1,680 vehicles a day, projected to reach 1,848 by 2035. The structure is 396 ft (120.7 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Smithport Lake RD over I-49 built?
It was built in 1985, making it 40 years old in 2025.
What condition is Smithport Lake RD over I-49 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 Smithport Lake RD over I-49 carry?
About 1,680 vehicles per day (2015 count).
How long is Smithport Lake RD over I-49?
The structure is 396 ft (120.7 m) long with a longest span of 89 ft (27.1 m) and a deck 31 ft wide.
Who owns Smithport Lake RD over I-49?
It is owned by the State Highway Agency.