Madison County, MT

84 public highway bridges

Madison County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Madison County, Montana contains 84 public highway bridges. Roughly 26.2% are rated “Good,” 53.6% “Fair,” and 13.1% “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.

84

Total Bridges

26.2%

Good

53.6%

Fair

13.1%

Poor Condition

Condition Distribution

Good

26.2% (22)

Fair

53.6% (45)

Poor

13.1% (11)

All Bridges (84)

Sort:

I 15

Over: RR-HWY 91- DRAINAGE

6.8M S MELROSE, Madison, MT

Built 1974 ADT: 155

I 15

Over: RR-HWY 91-DRAINAGE

6.8M S MELROSE, Madison, MT

Built 1974 ADT: 155

I 15

Over: SEP MELROSE RD

1.9M S MELROSE, Madison, MT

Built 1973 ADT: 81

I 15

Over: SEP MELROSE RD

1.9M S MELROSE, Madison, MT

Built 1973 ADT: 81

I 15

Over: INT MELROSE-HWY 91

MELROSE, Madison, MT

Built 1973 ADT: 100

I 15

Over: INT MELROSE-HWY 91

MELROSE, Madison, MT

Built 1973 ADT: 100

SUNDANCE BENCH RD

Over: MADISON RIVER 046

31M S ENNIS, Madison, MT

Built 1902 Load: 4.5 t ADT: 100

BURMA RD

Over: BIG HOLE RIVER 014

14M NW SHERIDAN, Madison, MT

Built 1987 Load: 8.2 t ADT: 100

FDR #1205

Over: NO DATA ENTERED

GRANITE MOUNTAIN, Madison, MT

Built 1985 Load: 13.9 t ADT: 50

S 87

Over: MADISON RIVER

29M SE CAMERON, Madison, MT

Built 1961 Load: 15.4 t ADT: 1,394

RUBY ROAD

Over: MIDDLE FK RUBY RIVE

M FK RUBY RIVER, Madison, MT

Built 1947 Load: 16.5 t ADT: 50

S BOULDER RD

Over: UPR S BOULDER RIVER 055

4M S JEFFERSON ISLAND, Madison, MT

Built 2003 Load: 17.2 t ADT: 100

NO DATA ENTERED

Over: BURNT CR

BURNT CR, Madison, MT

Built 1947 Load: 19.1 t ADT: 50

BURMA RD

Over: BIG HOLE RIVER 015

14M NW SHERIDAN, Madison, MT

Built 1987 Load: 20.0 t ADT: 100

RUBY-CENTENNTIAL

Over: EAST FK RUBY RIVER

EAST FK RUBY RIVER, Madison, MT

Built 1954 Load: 20.1 t ADT: 50

KOUNTZ RD

Over: JEFFERSON RIVER 017

3M E WHITEHALL, Madison, MT

Built 1973 Load: 21.8 t ADT: 264

S 359

Over: BRICKER SPARROW DITCH

JEFFERSON ISLAND, Madison, MT

Built 1958 Load: 22.7 t ADT: 1,402

CLIFF LAKE RD

Over: MADISON RIVER 045

36M S ENNIS, Madison, MT

Built 2001 Load: 23.6 t ADT: 100

S 287

Over: ALDER CREEK

LAURIN, Madison, MT

Built 1940 Load: 23.6 t ADT: 1,862

S 287

Over: RAMSHORN CREEK

2M N LAURIN, Madison, MT

Built 1940 Load: 24.5 t ADT: 1,862

S 41

Over: JEFFERSON RIVER

3M S SILVERSTAR, Madison, MT

Built 1992 Load: 24.5 t ADT: 1,899

S 41

Over: BEAVERHEAD RIVER

12M SW TWIN BRIDGES, Madison, MT

Built 1949 Load: 24.5 t ADT: 2,326

MELROSE RD

Over: BIG HOLE RIVER 036

2M W TWIN BRIDGES, Madison, MT

Built 1978 Load: 25.4 t ADT: 154

S 359

Over: JEFFERSON RIVER

JEFFERSON ISLAND, Madison, MT

Built 1967 Load: 25.4 t ADT: 1,402

PRIMROSE LN

Over: JEFFERSON RIVER

SILVER STAR, Madison, MT

Built 2003 Load: 25.6 t ADT: 108

S WILLOW CREEK RD

Over: SOUTH WILLOW CREEK 064

4M S PONY, Madison, MT

Built 2003 Load: 27.2 t ADT: 100

DUNCAN DISTRICT RD

Over: RUBY RIVER 022

4M SW SHERIDAN, Madison, MT

Built 2010 Load: 27.2 t ADT: 100

US 287

Over: INDIAN CREEK

7M S CAMERON, Madison, MT

Built 1933 Load: 27.2 t ADT: 1,789

SPANISH CREEK ROAD

Over: NORTH FORK SPANISH CREEK

SPANISH CREEK, Madison, MT

Built 1967 Load: 27.5 t ADT: 50

US 287

Over: MADISON RIVER

ENNIS, Madison, MT

Built 2001 Load: 28.1 t ADT: 4,210

JACK CREEK RD

Over: JACK CREEK 027

10M E ENNIS, Madison, MT

Built 1952 Load: 29.0 t ADT: 175

US 287

Over: SOUTH WILLOW CREEK

HARRISON, Madison, MT

Built 1934 Load: 29.9 t ADT: 4,026

MT 41

Over: BEAVERHEAD RIVER

TWIN BRIDGES, Madison, MT

Built 1949 Load: 29.9 t ADT: 2,773

S 84

Over: CHERRY CREEK

9M NE NORRIS, Madison, MT

Built 1952 Load: 29.9 t ADT: 2,446

I 15

Over: BIG HOLE RIVER

7.4M S MELROSE, Madison, MT

Built 1973 Load: 31.1 t ADT: 1,902

I 15

Over: BIG HOLE RIVER

7.4M S MELROSE, Madison, MT

Built 1973 Load: 31.1 t ADT: 1,902

NO DATA ENTERED

Over: COAL CR

COAL CR, Madison, MT

Built 1950 Load: 31.8 t ADT: 40

S 287

Over: WATER GULCH

4M NW VIRGINIA CITY, Madison, MT

Built 1942 Load: 31.8 t ADT: 1,151

KOUNTZ RD

Over: JEFFERSON RIV OVRFLW 016

2M S WHITEHALL, Madison, MT

Built 1977 Load: 32.7 t ADT: 264

LEWIS LN

Over: RUBY RIVER 021

5M W SHERIDAN, Madison, MT

Built 1975 Load: 32.7 t ADT: 247

COTTONWOOD CREEK R

Over: RUBY RIVER 061

9M S ALDER, Madison, MT

Built 1984 Load: 32.7 t ADT: 100

SWEETWATER RD

Over: RUBY RIVER 059

11M S ALDER, Madison, MT

Built 1998 Load: 32.7 t ADT: 100

PRIMROSE LN

Over: JEFFERSON RIVER OVERFLOW

2M E SILVERSTAR, Madison, MT

Built 1977 Load: 32.7 t ADT: 108

LEDFORD CREEK RD

Over: RUBY RIVER 058

17M S ALDER, Madison, MT

Built 1960 Load: 33.4 t ADT: 100

JACK CR BENCH RD

Over: JACK CREEK 031

7M E ENNIS, Madison, MT

Built 1952 Load: 33.6 t ADT: 175

JOHNNY RIDGE RD

Over: MADISON RIVER 001

7M S CAMERON, Madison, MT

Built 1967 Load: 34.5 t ADT: 409

S 359

Over: SOUTH BOULDER RIVER

3M S JEFFERSON ISLAND, Madison, MT

Built 1958 Load: 34.5 t ADT: 1,402

S 287

Over: WISCONSIN CREEK

3M NW SHERIDAN, Madison, MT

Built 1999 Load: 36.3 t ADT: 1,866

ENNIS LAKE RD

Over: MADISON RIVER 032

4M E MCALLISTER, Madison, MT

Built 1990 Load: 39.9 t ADT: 383

JUDY LN

Over: RUBY RIVER 026

W OF ALDER, Madison, MT

Built 1984 Load: 49.0 t ADT: 100

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Compiled by PlainBridges, Independent data publisher

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.