Total bridges
148
Public highway bridges in Ravalli County
County profile · official public datasets
Ravalli County, MT
148 public highway bridges tracked in the FHWA National Bridge Inventory: 41.2% rated Good, 53.4% Fair, 5.4% Poor.
- 148
- Public bridges
- 41.2%
- Good condition
- 5.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Ravalli County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 45%
- lowest Poor share in state
- 5.4%
- Poor-condition share
- 148
- public highway bridges
- 1981
- 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.
Ravalli County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Ravalli County ranks #25 of 56 Montana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.4%). Ravalli County, Montana contains 148 public highway bridges. Roughly 41.2% are rated “Good,” 53.4% “Fair,” and 5.4% “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
41.2%
61 of 148 rated 7-9
Fair condition
53.4%
79 of 148 rated 5-6
Poor condition
5.4%
8 of 148 rated 4 or below
In-state Poor-share rank
#25 of 56
Among Montana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 148 NBI-tracked bridges by lowest applicable component rating.
Good 41.2% (61)
Fair 53.4% (79)
Poor 5.4% (8)
Ravalli County's Poor-condition bridges carry 2,194 vehicle crossings a day
That is 0.7% of the county's reported daily bridge traffic on 5.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 274 crossings a day against 3,258 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 148 of 148 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
43.9% of Ravalli County's bridges have passed the 50-year mark
65 of the 148 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 41.2% 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.
One structure carries 77.6% of the county's Poor-condition bridge traffic
SKALKAHO HWY over SKALKAHO CREEK 053, built 1941, carries 1,703 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 8-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 2,194 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Ravalli County's bridges were built
148 bridges with a recorded construction year, grouped by decade
- 1910s 3
1910–1919
3 bridges
- 1930s 3
1930–1939
3 bridges
- 1940s 10
1940–1949
10 bridges
- 1950s 10
1950–1959
10 bridges
- 1960s
1960–1969
14 bridges
- 1970s
1970–1979
33 bridges
- 1980s
1980–1989
14 bridges
- 1990s
1990–1999
16 bridges
- 2000s
2000–2009
25 bridges
- 2010s
2010–2019
18 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1970s, when 33 of the county's bridges still in the inventory were built, which is 22.3% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1981) matches the Montana average (1977).
How Ravalli County compares with Montana's closest counties by inventory size
The 5 Montana counties nearest Ravalli County in number of bridges, with their condition splits. Its 5.4% Poor share is the 3rd-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1976 is 5 years newer.
Showing the 5 closest of 55 Montana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Fergus County | 158 | 31.6% | 62% | 6.3% | 1978 |
| Mineral County | 152 | 25.7% | 64.5% | 9.9% | 1971 |
| Ravalli County (this page) | 148 | 41.2% | 53.4% | 5.4% | 1981 |
| Big Horn County | 135 | 26.7% | 68.1% | 5.2% | 1978 |
| Jefferson County | 134 | 17.9% | 76.9% | 5.2% | 1977 |
| Park County | 124 | 21% | 68.5% | 10.5% | 1976 |
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 Ravalli 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 Ravalli County, both outside Montana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MT (148 bridges here).
- Claiborne County, LA · 148 bridges
- Nance County, NE · 148 bridges
- Cayuga County, NY · 148 bridges
- Wasco County, OR · 148 bridges
Similar average build year
Nearest mean year-built outside MT (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (148)
GOLF COURSE RD
FairOver: BITTERROOT CANAL 045
3M SE HAMILTON, Ravalli, MT
Built 1986 Load: 32.7 t ADT: 100
TAMMANY LN
FairOver: BITTERROOT CANAL 046
4M SE HAMILTON, Ravalli, MT
Built 1988 Load: 32.7 t ADT: 100
FOLEY LN
FairOver: SKALKAHO CREEK 041
1M E GRANTSDALE, Ravalli, MT
Built 1972 Load: 32.7 t ADT: 100
GOLF COURSE RD
FairOver: BITTERROOT CANAL 044
2M SE GRANTSDALE, Ravalli, MT
Built 1984 Load: 32.7 t ADT: 100
OLD DARBY RD
FairOver: SLEEPING CHILD CREEK 075
6M S HAMILTON, Ravalli, MT
Built 1972 Load: 32.7 t ADT: 238
S SHOSHONE LOOP
FairOver: SKALKAHO CREEK 043
3M SE GRANTSDALE, Ravalli, MT
Built 1979 Load: 32.7 t ADT: 100
LIL SLEEPING CHILD
FairOver: SLEEPING CHILD CREEK 038
7M SE HAMILTON, Ravalli, MT
Built 1972 Load: 32.7 t ADT: 100
CONNER CUTOFF RD
FairOver: W FORK BITTERROOT R 049
1M W CONNER, Ravalli, MT
Built 1962 Load: 32.7 t ADT: 100
STEVI CUTOFF RD
FairOver: BITTERROOT RIVER
1M NW STEVENSVILLE, Ravalli, MT
Built 1951 Load: 32.7 t ADT: 7,991
WEST FORK RD
FairOver: TRAPPER CREEK
6M SW CONNER, Ravalli, MT
Built 1957 Load: 32.7 t ADT: 871
S 531-WESTSIDE RD
FairOver: SAWTOOTH CREEK
3M SW HAMILTON, Ravalli, MT
Built 1972 Load: 32.7 t ADT: 954
NO DATA ENTERED
FairOver: BURNT FORK BTTR RIV
NO DATA ENTERED, Ravalli, MT
Built 1967 Load: 33.7 t ADT: 5
NO DATA ENTERED
FairOver: BLUE JOINT
NO DATA ENTERED, Ravalli, MT
Built 1960 Load: 34.0 t ADT: 50
US 93
FairOver: SKALKAHO CREEK
2M S HAMILTON, Ravalli, MT
Built 1984 Load: 34.5 t ADT: 10,223
BELL CROSSING
FairOver: BITTERROOT RIVER OVERFLO
3M S STEVENSVILLE, Ravalli, MT
Built 1974 Load: 34.5 t ADT: 2,762
NO DATA ENTERED
FairOver: NEZPERCE FK
NO DATA ENTERED, Ravalli, MT
Built 1972 Load: 35.3 t ADT: 10
SKALKAHO HWY
FairOver: REPUBLICAN DITCH 063
3M S HAMILTON, Ravalli, MT
Built 1941 Load: 35.4 t ADT: 3,082
MID BURNT FORK RD
FairOver: NORTH BURNT FORK CR 022
4M SE STEVENSVILLE, Ravalli, MT
Built 1970 Load: 35.4 t ADT: 100
US 93
FairOver: S FORK BEAR CREEK
2M S VICTOR, Ravalli, MT
Built 2011 Load: 35.4 t ADT: 13,545
US 93
FairOver: MCCALLA CREEK
6M N VICTOR, Ravalli, MT
Built 2008 Load: 35.4 t ADT: 12,937
SKALKAHO HWY
FairOver: HEDGES CANAL 012
3M SE HAMILTON, Ravalli, MT
Built 1941 Load: 36.3 t ADT: 1,703
CONNER CUTOFF RD
FairOver: E FORK BITTERROOT R 050
E OF CONNER, Ravalli, MT
Built 1962 Load: 39.5 t ADT: 100
NO DATA ENTERED
FairOver: TIN CUP CREEK
NO DATA ENTERED, Ravalli, MT
Built 1972 Load: 40.8 t ADT: 5
SOFT ROCK RD
FairOver: BITTERROOT CANAL 059
3M E CORVALLIS, Ravalli, MT
Built 1977 Load: 41.6 t ADT: 100
US 93
FairOver: BLODGETT CREEK
2M N HAMILTON, Ravalli, MT
Built 2008 Load: 42.6 t ADT: 14,663
BOWMAN RD
FairOver: MILL CREEK 103
3M W WOODSIDE, Ravalli, MT
Built 1973 Load: 44.5 t ADT: 100
NO DATA ENTERED
FairOver: DALY CR
NO DATA ENTERED, Ravalli, MT
Built 1947 Load: 56.1 t ADT: 45
MERIDIAN RD
FairOver: FRED BURR CREEK 109
5M S VICTOR, Ravalli, MT
Built 2009 Load: 99.9 t ADT: 100
ORCHARD DR
FairOver: BLODGETT CREEK 013
2M N HAMILTON, Ravalli, MT
Built 1987 Load: 99.9 t ADT: 100
NO DATA ENTERED
GoodOver: JOHNSON CR
NO DATA ENTERED, Ravalli, MT
Built 2016 ADT: 50
KOOTENAI CREEK RD
GoodOver: KOOTENAI CREEK 048
2M NW STEVENSVILLE, Ravalli, MT
Built 2008 Load: 14.5 t ADT: 100
NO DATA ENTERED
GoodOver: SHEEPHEAD CR
NO DATA ENTERED, Ravalli, MT
Built 2011 Load: 18.5 t ADT: 100
COUNTY ROAD 653
GoodOver: E FORK BITTERROOT R 107
4M NE SULA, Ravalli, MT
Built 1991 Load: 19.1 t ADT: 303
NO DATA ENTERED
GoodOver: E F BITTERROOT
NO DATA ENTERED, Ravalli, MT
Built 1947 Load: 21.1 t ADT: 10
US 93
GoodOver: SWEATHOUSE CREEK
VICTOR, Ravalli, MT
Built 2010 Load: 23.6 t ADT: 13,545
S 203-EASTSIDE HWY
GoodOver: BITTERROOT RIVER
1M E FLORENCE, Ravalli, MT
Built 2014 Load: 23.6 t ADT: 10,617
NO DATA ENTERED
GoodOver: TRAPPER CREEK
NO DATA ENTERED, Ravalli, MT
Built 1979 Load: 24.3 t ADT: 5
US 93
GoodOver: ROCK CREEK
4M N DARBY, Ravalli, MT
Built 1990 Load: 24.5 t ADT: 4,502
US 93
GoodOver: N FORK BEAR CREEK
1M S VICTOR, Ravalli, MT
Built 2011 Load: 24.5 t ADT: 13,545
NO DATA ENTERED
GoodOver: WARM SPRINGS CREEK
NO DATA ENTERED, Ravalli, MT
Built 2011 Load: 24.6 t ADT: 50
NO DATA ENTERED
GoodOver: MOOSE CREEK
NO DATA ENTERED, Ravalli, MT
Built 2007 Load: 25.6 t ADT: 40
NO DATA ENTERED
GoodOver: NFSR 5758 AND NFSR 725
NO DATA ENTERED, Ravalli, MT
Built 2008 Load: 25.6 t ADT: 25
W FORK RD
GoodOver: W FORK BITTERROOT R 003
9M SW CONNER, Ravalli, MT
Built 2004 Load: 26.3 t ADT: 46
US 93
GoodOver: MCCALLA CREEK
5M N VICTOR, Ravalli, MT
Built 2010 Load: 26.3 t ADT: 12,937
HAMILTON HEIGHTS R
GoodOver: BITTERROOT CANAL 057
3M SE CORVALLIS, Ravalli, MT
Built 1992 Load: 26.6 t ADT: 100
BELL CROSSING
GoodOver: BITTERROOT RIVER OVERFLO
2M NE VICTOR, Ravalli, MT
Built 1974 Load: 27.2 t ADT: 2,762
NO DATA ENTERED
GoodOver: NO DATA ENTERED
NO DATA ENTERED, Ravalli, MT
Built 2011 Load: 27.5 t ADT: 40
NO DATA ENTERED
GoodOver: WATCHTOWER CR
NO DATA ENTERED, Ravalli, MT
Built 1990 Load: 27.5 t ADT: 30
NO DATA ENTERED
GoodOver: THREE MILE CREEK
NO DATA ENTERED, Ravalli, MT
Built 2007 Load: 28.8 t ADT: 40
US 93 FH 19
GoodOver: TIN CUP CREEK
1M S DARBY, Ravalli, MT
Built 1990 Load: 29.0 t ADT: 3,589
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.