TRAIL CREEK RD
Carrying TRAIL CREEK RD over POWDER RIVER 061
41M E MILES CITY, Custer, Montana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: TRAIL CREEK RD
The TRAIL CREEK RD bridge in Custer, Montana carries TRAIL CREEK RD over POWDER RIVER 061. It was built in 1926, making it 100 years old today. It was last reconstructed in 1998, extending its service life. The structure is built primarily of steel and spans 4 sections, stretching 138.7 meters (455 feet) end to end. Daily traffic averages 100 vehicles, placing it in the lower-traffic tier of Montana bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 5/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 18.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How TRAIL CREEK 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 How the historical reference is calculated.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
- 1926
- Last Reconstructed
- 1998
- Material
- Steel
- Number of Spans
- 4
- Structure Length
- 138.7 m (455 ft)
- Deck Width
- 5.4 m (18 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 100 vehicles/day
- Structure Number
- L09302000+01001
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether TRAIL CREEK RD 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 TRAIL CREEK RD against other structures in Custer 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 TRAIL CREEK RD?
TRAIL CREEK RD in Custer, Montana has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is TRAIL CREEK RD inspected?
TRAIL CREEK 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 100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. TRAIL CREEK RD 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 TRAIL CREEK RD?
TRAIL CREEK RD has an NBI inventory load rating of 18.8 metric tons.
Who is responsible for maintaining TRAIL CREEK RD?
TRAIL CREEK RD is owned and maintained by County Highway Agency.
How old is TRAIL CREEK RD and does age affect safety?
TRAIL CREEK RD was built in 1926, making it 100 years old and last reconstructed in 1998.
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.