M 78 over Maple Creek
FairSteele County, Minnesota · 0.1 MI E of JCT Csah 1 · Structure no. 74511
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 64 ft
- 1 main span
- Daily traffic
- 465
- 1967 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
M 78 over Maple Creek is a prestressed concrete stringer/multi-beam or girder carrying M 78 over Maple Creek in Steele County, Minnesota. It was built in 1966, so it is 59 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 465 vehicles a day, projected to reach 465 by 2029. The structure is 64 ft (19.5 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M 78 over Maple Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is M 78 over Maple Creek 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 May 2023.
How much traffic does M 78 over Maple Creek carry?
About 465 vehicles per day (1967 count).
How long is M 78 over Maple Creek?
The structure is 64 ft (19.5 m) long with a longest span of 59 ft (18 m) and a deck 48 ft wide.
Who owns M 78 over Maple Creek?
It is owned by the City or Municipal Highway Agency.