7 Mile Road over Big Salt River
FairPosted for loadMidland County, Michigan · 0.1 MI S of Saginaw Road · Structure no. 000000000006954
- Built
- 1927
- 98 years old
- Condition
- Fair
- inspected September 2023
- Type
- Girder and Floorbeam System
- Concrete
- Length
- 92 ft
- 1 main span
- Daily traffic
- 4,490
- 1999 count
- Owner
- County
- County Highway Agency
About this bridge
7 Mile Road over Big Salt River is a concrete girder and floorbeam system carrying 7 Mile Road over Big Salt River in Midland County, Michigan. It was built in 1927, so it is 98 years old, older than the Michigan average of 48.3 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. Its operating status is: posted for load restriction.
It carries about 4,490 vehicles a day, roughly 10% of them trucks, projected to reach 6,672 by 2019. The structure is 92 ft (28 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 7 Mile Road over Big Salt River built?
It was built in 1927, making it 98 years old in 2025.
What condition is 7 Mile Road over Big Salt River 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 September 2023.
How much traffic does 7 Mile Road over Big Salt River carry?
About 4,490 vehicles per day (1999 count), of which roughly 10% are trucks.
How long is 7 Mile Road over Big Salt River?
The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 23 ft wide.
Who owns 7 Mile Road over Big Salt River?
It is owned by the County Highway Agency.