New Lothrop Road over Shiawassee River
PoorClosed to trafficShiawassee County, Michigan · 0.5 Mile West of Byron · Structure no. 000000000009817
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 139 ft
- 3 main spans
- Daily traffic
- 2,055
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
New Lothrop Road over Shiawassee River is a steel stringer/multi-beam or girder carrying New Lothrop Road over Shiawassee River in Shiawassee County, Michigan. It was built in 1955, so it is 70 years old, older than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.
It carries about 2,055 vehicles a day, roughly 10% of them trucks, projected to reach 3,054 by 2031. The structure is 139 ft (42.4 m) long and 30 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 0 Failed | Out of service and beyond corrective action. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was New Lothrop Road over Shiawassee River built?
It was built in 1955, making it 70 years old in 2025.
What condition is New Lothrop Road over Shiawassee River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does New Lothrop Road over Shiawassee River carry?
About 2,055 vehicles per day (2011 count), of which roughly 10% are trucks.
How long is New Lothrop Road over Shiawassee River?
The structure is 139 ft (42.4 m) long with a longest span of 57 ft (17.3 m) and a deck 30 ft wide.
Who owns New Lothrop Road over Shiawassee River?
It is owned by the County Highway Agency.