MULLAN RD
Carrying MULLAN RD over IRRIGATION CANAL
6M SE FRENCHTOWN, Missoula, Montana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MULLAN RD
The MULLAN RD bridge in Missoula, Montana carries MULLAN RD over IRRIGATION CANAL. It was built in 1970, making it 56 years old today. The structure is built primarily of steel and spans 1 section, stretching 7.0 meters (23 feet) end to end. Daily traffic averages 1,605 vehicles, placing it in the moderately-trafficked tier of Montana bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 4/9, substructure at 6/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 43.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MULLAN RD 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 How the historical reference is calculated.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
- 1970
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 7.0 m (23 ft)
- Deck Width
- 8.5 m (28 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 1,605 vehicles/day
- Structure Number
- S00263008+00001
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The superstructure (beams and supports above the deck) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
MULLAN RD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare MULLAN RD against other structures in Missoula 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 MULLAN RD?
MULLAN RD in Missoula, Montana has a deck rating of 6/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is MULLAN RD inspected?
MULLAN RD'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 1,605 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MULLAN RD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for MULLAN RD?
MULLAN RD has an NBI inventory load rating of 43.5 metric tons.
Who is responsible for maintaining MULLAN RD?
MULLAN RD is owned and maintained by State Highway Agency.
How old is MULLAN RD and does age affect safety?
MULLAN RD was built in 1970, making it 56 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.