US 31 NB over Mangun Arm Ditch
GoodMarshall County, Indiana · 01.19 N US 6 · Structure no. 079790
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 77 ft
- 1 main span
- Daily traffic
- 9,431
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US 31 NB over Mangun Arm Ditch is a prestressed concrete tee beam carrying US 31 NB over Mangun Arm Ditch in Marshall County, Indiana. It was built in 2014, so it is 11 years old, younger than the Indiana average of 46.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 9,431 vehicles a day, roughly 23% of them trucks, projected to reach 15,584 by 2035. The structure is 77 ft (23.4 m) long and 46 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 31 NB over Mangun Arm Ditch built?
It was built in 2014, making it 11 years old in 2025.
What condition is US 31 NB over Mangun Arm Ditch 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 September 2023.
How much traffic does US 31 NB over Mangun Arm Ditch carry?
About 9,431 vehicles per day (2021 count), of which roughly 23% are trucks.
How long is US 31 NB over Mangun Arm Ditch?
The structure is 77 ft (23.4 m) long with a longest span of 75 ft (22.8 m) and a deck 46 ft wide.
Who owns US 31 NB over Mangun Arm Ditch?
It is owned by the State Highway Agency.