Porter Road over Pine River
FairMidland County, Michigan · 0.3 M SE of Pine River RD · Structure no. 000000000006946
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 150 ft
- 2 main spans
- Daily traffic
- 226
- 2016 count
- Owner
- County
- County Highway Agency
About this bridge
Porter Road over Pine River is a prestressed concrete box beam or girders - multiple carrying Porter Road over Pine River in Midland County, Michigan. It was built in 1986, so it is 39 years old, younger 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 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 226 vehicles a day, roughly 5% of them trucks, projected to reach 336 by 2036. The structure is 150 ft (45.7 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Porter Road over Pine River built?
It was built in 1986, making it 39 years old in 2025.
What condition is Porter Road over Pine 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 Porter Road over Pine River carry?
About 226 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is Porter Road over Pine River?
The structure is 150 ft (45.7 m) long with a longest span of 75 ft (22.8 m) and a deck 31 ft wide.
Who owns Porter Road over Pine River?
It is owned by the County Highway Agency.