I-55 over Mill Branch RD
FairShelby County, Tennessee · 3.5 MI N of Miss Sta Line · Structure no. 79I00550021
- Built
- 1960
- 65 years old, rebuilt 2002
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 327 ft
- 4 main spans
- Daily traffic
- 118,031
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I-55 over Mill Branch RD is a steel continuous stringer/multi-beam or girder carrying I-55 over Mill Branch RD in Shelby County, Tennessee. It was built in 1960 and reconstructed in 2002, so it is 65 years old, older than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 118,031 vehicles a day, roughly 8% of them trucks, projected to reach 171,920 by 2041. The structure is 327 ft (99.7 m) long and 144 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-55 over Mill Branch RD built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2002.
What condition is I-55 over Mill Branch RD in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.
How much traffic does I-55 over Mill Branch RD carry?
About 118,031 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is I-55 over Mill Branch RD?
The structure is 327 ft (99.7 m) long with a longest span of 94 ft (28.8 m) and a deck 144 ft wide.
Who owns I-55 over Mill Branch RD?
It is owned by the State Highway Agency.