US 87-MT 3-MT 200
Carrying US 87-MT 3-MT 200 over MISSOURI RIVER-U5205-RR
GREAT FALLS-10TH AVE S, Cascade, Montana
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
US 87-MT 3-MT 200 in Cascade, Montana sits above 4% of rated Montana bridges on inventory load rating (11 t), while its 1983 build year is earlier than 17% of Cascade's recorded-year cohort (185 bridges).
US 87-MT 3-MT 200 in Cascade, Montana is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1983, it carries 3 rated components 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 MT:P00060094+08281
LATE-CENTURY · STEEL · LONG-SPAN-RUN · DECK-LED · HEAVY-ADT · LIGHT-LOAD · CAT-FAIR
- LATE-CENTURY 1980–1999
- STEEL Steel
- LONG-SPAN-RUN 6 spans
- DECK-LED Deck-led
- HEAVY-ADT Heavy 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: US 87-MT 3-MT 200
The US 87-MT 3-MT 200 bridge in Cascade, Montana carries US 87-MT 3-MT 200 over MISSOURI RIVER-U5205-RR. It was built in 1983, making it 43 years old today. The structure is built primarily of steel continuous and spans 6 sections, stretching 646.6 meters (2121 feet) end to end. Daily traffic averages 13,385 vehicles, placing it in the heavily-trafficked tier of Montana bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range.
How US 87-MT 3-MT 200 compares
Age against the county: built in 1983, earlier than 32 of Cascade's 185 bridges with a recorded construction year (17%), against a county median build year of 1966. This is one of the newer structures in its county.
Live comparison across Montana bridges with a recorded inventory load rating (5,144 of 5,224 rated).
US 87-MT 3-MT 200 vs every rated Montana bridge
Inventory load rating (metric tons), FHWA NBI, this state
11 Top 96% higher than 4% of 5,144 bridges
rated Montana 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.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Cascade inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 185 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
- 1983
- Material
- Steel Continuous
- Number of Spans
- 6
- Structure Length
- 646.6 m (2121 ft)
- Deck Width
- 15.8 m (52 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 13,385 vehicles/day
- Structure Number
- P00060094+08281
Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
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 US 87-MT 3-MT 200 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 US 87-MT 3-MT 200 against other structures in Cascade 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 US 87-MT 3-MT 200?
US 87-MT 3-MT 200 in Cascade, Montana has a deck rating of 5/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is US 87-MT 3-MT 200 inspected?
US 87-MT 3-MT 200'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 13,385 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US 87-MT 3-MT 200 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 US 87-MT 3-MT 200?
US 87-MT 3-MT 200 has an NBI inventory load rating of 10.9 metric tons.
Who is responsible for maintaining US 87-MT 3-MT 200?
US 87-MT 3-MT 200 is owned and maintained by State Highway Agency.
How old is US 87-MT 3-MT 200 and does age affect safety?
US 87-MT 3-MT 200 was built in 1983, making it 43 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.