M 846
Carrying M 846 over TISCHERS CREEK
0.1 MI W OF JCT CSAH 9, St. Louis, Minnesota
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
M 846 in St. Louis, Minnesota sits above 1% of rated Minnesota bridges on inventory load rating (11 t), while its 1973 build year is earlier than 73% of St. Louis's recorded-year cohort (663 bridges).
M 846 in St. Louis, Minnesota is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1973, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure MN:L5930
INTERSTATE-ERA · STEEL · MULTI-SPAN · CULVERT-LED · TRACE-ADT · LIGHT-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light load
- CAT-FAIR Fair
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: M 846
The M 846 bridge in St. Louis, Minnesota carries M 846 over TISCHERS CREEK. It was built in 1973, making it 53 years old today. The structure is built primarily of steel and spans 2 sections, stretching 7.1 meters (23 feet) end to end. Daily traffic averages 15 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 5/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How M 846 compares
Age against the county: built in 1973, earlier than 486 of St. Louis's 663 bridges with a recorded construction year (73%), against a county median build year of 1988. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Minnesota bridges with a recorded inventory load rating (13,532 rated).
M 846 vs every rated Minnesota bridge
Inventory load rating (metric tons), FHWA NBI, this state
11 Top 99% higher than 1% of 13,532 bridges
rated Minnesota bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
St. Louis inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 663 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1973
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 7.1 m (23 ft) 0
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 15 vehicles/day
- Structure Number
- L5930
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether M 846 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 M 846 against other structures in St. Louis 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 M 846?
M 846 in St. Louis, Minnesota on the FHWA's 0–9 scale.
How often is M 846 inspected?
M 846'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 15 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. M 846 is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for M 846?
M 846 has an NBI inventory load rating of 11.4 metric tons.
Who is responsible for maintaining M 846?
M 846 is owned and maintained by City/Municipal Highway Agency.
How old is M 846 and does age affect safety?
M 846 was built in 1973, making it 53 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.