Total bridges
35
Public highway bridges in Toole County
County profile · official public datasets
Toole County, MT
35 public highway bridges tracked in the FHWA National Bridge Inventory: 34.3% rated Good, 65.7% Fair, 0% Poor.
- 35
- Public bridges
- 34.3%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Toole County posts a top-5% lowest Poor-condition share among rated counties in the state across rated county bridge inventory.
- Top 2%
- lowest Poor share in state
- 0%
- Poor-condition share
- 35
- public highway bridges
- 1973
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Toole County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Toole County ranks #1 of 56 Montana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Toole County, Montana contains 35 public highway bridges. Roughly 34.3% are rated “Good,” 65.7% “Fair,” and 0% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
34.3%
12 of 35 rated 7-9
Fair condition
65.7%
23 of 35 rated 5-6
Poor condition
0%
0 of 35 rated 4 or below
In-state Poor-share rank
#1 of 56
Among Montana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 35 NBI-tracked bridges by lowest applicable component rating.
Good 34.3% (12)
Fair 65.7% (23)
Poor 0% (0)
51.4% of Toole County's bridges have passed the 50-year mark
18 of the 35 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 34.3% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
When Toole County's bridges were built
35 bridges with a recorded construction year, grouped by decade
- 1930s 2
1930–1939
2 bridges
- 1950s 1
1950–1959
1 bridges
- 1960s
1960–1969
9 bridges
- 1970s
1970–1979
15 bridges
- 1980s
1980–1989
6 bridges
- 2010s 1
2010–2019
1 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1970s, when 15 of the county's bridges still in the inventory were built, which is 42.9% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1973) matches the Montana average (1977).
How Toole County compares with Montana's closest counties by inventory size
The 5 Montana counties nearest Toole County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1973 against a peer-group mean of 1987 is 14 years older.
Showing the 5 closest of 55 Montana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Chouteau County | 42 | 54.8% | 38.1% | 7.1% | 1981 |
| Carter County | 41 | 31.7% | 63.4% | 4.9% | 1985 |
| Broadwater County | 37 | 27% | 67.6% | 5.4% | 1990 |
| Fallon County | 37 | 45.9% | 51.4% | 2.7% | 1998 |
| Toole County (this page) | 35 | 34.3% | 65.7% | 0% | 1973 |
| Daniels County | 33 | 51.5% | 39.4% | 9.1% | 1982 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Toole County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Toole County, both outside Montana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MT (35 bridges here).
- Seminole County, GA · 35 bridges
- Manistee County, MI · 35 bridges
- Ransom County, ND · 35 bridges
- Gilliam County, OR · 35 bridges
Similar average build year
Nearest mean year-built outside MT (1973 here).
- Jefferson County, AL · avg 1973 · 1,068 bridges
- Erie County, NY · avg 1973 · 906 bridges
- Davidson County, TN · avg 1973 · 832 bridges
- Lancaster County, PA · avg 1973 · 801 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (12)
HELSA RD
GoodOver: SEP I 15 012
2M N OILMONT, Toole, MT
Built 1971 Load: 17.2 t ADT: 100
I 15
GoodOver: INT KEVIN HWY
KEVIN, Toole, MT
Built 1980 Load: 22.7 t ADT: 1,010
BRONKEN RD
GoodOver: INT BRONKEN RD I 15 003
5M N SHELBY, Toole, MT
Built 1964 Load: 24.5 t ADT: 100
OILMONT HWY
GoodOver: TRAIL CREEK
21M E OILMONT, Toole, MT
Built 1974 Load: 24.5 t ADT: 105
I 15
GoodOver: INT 1ST ST NE
SUNBURST, Toole, MT
Built 1977 Load: 25.4 t ADT: 959
MCVEY-MCALPINE RD
GoodOver: INT MCVEY CO ROAD 006
3M SE SWEETGRASS, Toole, MT
Built 1977 Load: 25.4 t ADT: 22
GUS BLAZE RD
GoodOver: SEP GUS BLASE ROAD 011
3M S OILMONT, Toole, MT
Built 1980 Load: 27.2 t ADT: 100
OILMONT HWY
GoodOver: WILLOW CREEK
16M E OILMONT, Toole, MT
Built 1971 Load: 29.9 t ADT: 105
US 2
GoodOver: N FORK WILLOW CREEK
1M SW GALATA, Toole, MT
Built 1989 Load: 30.8 t ADT: 899
OILMONT HWY
GoodOver: MINERS COULEE
16M E OILMONT, Toole, MT
Built 1974 Load: 31.8 t ADT: 105
US 2
GoodOver: WEST FORK WILLOW CREEK
2M E DEVON, Toole, MT
Built 2019 Load: 38.1 t ADT: 899
JAP EVANS RD
GoodOver: WILLOW CREEK
9M NE DEVON, Toole, MT
Built 2020 Load: 68.0 t ADT: 100
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.