Marr Road over S Br Shiawassee River
PoorPosted for loadLivingston County, Michigan · Sec 10 Howell Twp · Structure no. 000000000005818
- Built
- 1937
- 88 years old
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 33 ft
- 1 main span
- Daily traffic
- 348
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Marr Road over S Br Shiawassee River is a steel stringer/multi-beam or girder carrying Marr Road over S Br Shiawassee River in Livingston County, Michigan. It was built in 1937, so it is 88 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 3 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: posted for load restriction.
It carries about 348 vehicles a day, projected to reach 400 by 2034. The structure is 33 ft (10 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 Marr Road over S Br Shiawassee River built?
It was built in 1937, making it 88 years old in 2025.
What condition is Marr Road over S Br 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 September 2024.
How much traffic does Marr Road over S Br Shiawassee River carry?
About 348 vehicles per day (2014 count).
How long is Marr Road over S Br Shiawassee River?
The structure is 33 ft (10 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.
Who owns Marr Road over S Br Shiawassee River?
It is owned by the County Highway Agency.