UT 100
Carrying UT 100 over BLACK RIVER
0.4 MI S OF JCT CSAH 32, Koochiching, Minnesota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: UT 100
The UT 100 bridge in Koochiching, Minnesota carries UT 100 over BLACK RIVER. It was built in 1980, making it 46 years old today. The structure is built primarily of wood or timber and spans 5 sections, stretching 31.1 meters (102 feet) end to end. Daily traffic averages 1 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by State Park/Forest/Reservation.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 32.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How UT 100 compares
Live comparison across Minnesota.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1980
- Material
- Wood or Timber
- Number of Spans
- 5
- Structure Length
- 31.1 m (102 ft)
- Deck Width
- 4.0 m (13 ft)
- Owner
- State Park/Forest/Reservation
- Avg Daily Traffic
- 1 vehicles/day
- Structure Number
- L9641
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether UT 100 is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare UT 100 against other structures in Koochiching and across Minnesota. Minnesota bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for UT 100?
UT 100 in Koochiching, Minnesota has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is UT 100 inspected?
UT 100's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 1 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. UT 100 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for UT 100?
UT 100 has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining UT 100?
UT 100 is owned and maintained by State Park/Forest/Reservation.
How old is UT 100 and does age affect safety?
UT 100 was built in 1980, making it 46 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.