T 78 over Maple River
GoodBlue Earth County, Minnesota · 0.3 MI E of JCT Csah 1 · Structure no. 07582
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 133 ft
- 3 main spans
- Daily traffic
- 50
- 2004 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T 78 over Maple River is a concrete continuous slab carrying T 78 over Maple River in Blue Earth County, Minnesota. It was built in 2005, so it is 20 years old, younger than the Minnesota average of 38.5 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 50 vehicles a day, projected to reach 50 by 2029. The structure is 133 ft (40.4 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was T 78 over Maple River built?
It was built in 2005, making it 20 years old in 2025.
What condition is T 78 over Maple River 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 November 2024.
How much traffic does T 78 over Maple River carry?
About 50 vehicles per day (2004 count).
How long is T 78 over Maple River?
The structure is 133 ft (40.4 m) long with a longest span of 50 ft (15.2 m) and a deck 35 ft wide.
Who owns T 78 over Maple River?
It is owned by the Town or Township Highway Agency.