US-23 NB over Indiana & Ohio RR
PoorMonroe County, Michigan · 3.0 MI S of Dundee · Structure no. 000000000007101
- Built
- 1958
- 67 years old
- Condition
- Poor
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 186 ft
- 3 main spans
- Daily traffic
- 16,733
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
US-23 NB over Indiana & Ohio RR is a prestressed concrete box beam or girders - multiple carrying US-23 NB over Indiana & Ohio RR in Monroe County, Michigan. It was built in 1958, so it is 67 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 4 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: open, would be posted or closed except for temporary shoring.
It carries about 16,733 vehicles a day, roughly 16% of them trucks, projected to reach 19,701 by 2018. The structure is 186 ft (56.7 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 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 US-23 NB over Indiana & Ohio RR built?
It was built in 1958, making it 67 years old in 2025.
What condition is US-23 NB over Indiana & Ohio RR 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 April 2024.
How much traffic does US-23 NB over Indiana & Ohio RR carry?
About 16,733 vehicles per day (2007 count), of which roughly 16% are trucks.
How long is US-23 NB over Indiana & Ohio RR?
The structure is 186 ft (56.7 m) long with a longest span of 62 ft (18.9 m) and a deck 49 ft wide.
Who owns US-23 NB over Indiana & Ohio RR?
It is owned by the State Highway Agency.