THREE MILE DR
Carrying THREE MILE DR over N-109
KALISPELL-THREE MILE DR, Flathead, Montana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: THREE MILE DR
The THREE MILE DR bridge in Flathead, Montana carries THREE MILE DR over N-109. It was built in 2014, making it 12 years old today. The structure is built primarily of prestressed concrete. Daily traffic averages 21,520 vehicles, placing it in the heavily-trafficked tier of Montana bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How THREE MILE DR compares
Live comparison across Montana.
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 How the historical reference is calculated.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
- 2014
- Material
- Prestressed Concrete
- Avg Daily Traffic
- 21,520 vehicles/day
- Structure Number
- U06706000+06001
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 THREE MILE DR 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 THREE MILE DR against other structures in Flathead and across Montana. Montana 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 THREE MILE DR?
THREE MILE DR in Flathead, Montana on the FHWA's 0–9 scale.
How often is THREE MILE DR inspected?
THREE MILE DR'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 21,520 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. THREE MILE DR is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for THREE MILE DR?
An inventory load rating is not recorded for THREE MILE DR.
Who is responsible for maintaining THREE MILE DR?
Ownership is not specified for THREE MILE DR in the NBI.
How old is THREE MILE DR and does age affect safety?
THREE MILE DR was built in 2014, making it 12 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.