MN 40
Carrying MN 40 over LAC QUI PARLE RIVER
12.5 MI W OF JCT TH 75, Lac qui Parle, Minnesota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MN 40
The MN 40 bridge in Lac qui Parle, Minnesota carries MN 40 over LAC QUI PARLE RIVER. It was built in 1963, making it 63 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 20.0 meters (66 feet) end to end. Daily traffic averages 234 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by State Highway Agency.
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. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 57.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MN 40 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 How the historical reference is calculated.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
- 1963
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 20.0 m (66 ft)
- Deck Width
- 14.2 m (47 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 234 vehicles/day
- Structure Number
- 37003
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • 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) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether MN 40 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 MN 40 against other structures in Lac qui Parle 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 MN 40?
MN 40 in Lac qui Parle, 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 MN 40 inspected?
MN 40'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 234 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MN 40 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 MN 40?
MN 40 has an NBI inventory load rating of 57.0 metric tons.
Who is responsible for maintaining MN 40?
MN 40 is owned and maintained by State Highway Agency.
How old is MN 40 and does age affect safety?
MN 40 was built in 1963, making it 63 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.