Ut 100 over Black River
GoodKoochiching County, Minnesota · 0.4 MI S of JCT Csah 32 · Structure no. L9641
- Built
- 1980
- 45 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Wood or Timber
- Length
- 102 ft
- 5 main spans
- Daily traffic
- 1
- 2009 count
- Owner
- State
- State Park, Forest, or Reservation Agency
About this bridge
Ut 100 over Black River is a wood or timber slab carrying Ut 100 over Black River in Koochiching County, Minnesota. It was built in 1980, so it is 45 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1 vehicles a day, projected to reach 1 by 2029. The structure is 102 ft (31.1 m) long and 13 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Ut 100 over Black River built?
It was built in 1980, making it 45 years old in 2025.
What condition is Ut 100 over Black River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does Ut 100 over Black River carry?
About 1 vehicles per day (2009 count).
How long is Ut 100 over Black River?
The structure is 102 ft (31.1 m) long with a longest span of 26 ft (7.9 m) and a deck 13 ft wide.
Who owns Ut 100 over Black River?
It is owned by the State Park, Forest, or Reservation Agency.