Oldest Bridges in Montana

The oldest bridge in Montana is the S Howie ST over Reeders Alley 001 in Lewis and Clark County, built in 1881.

Age, drawn to scale

The 10 oldest in Montana, one timeline

187519001925195019752000today

1S Howie ST over Reeders Alley 001MT · 1881 · 100/day 2Old Town RD over Jefferson River 063MT · 1894 · 100/day 3Augusta RD over Dearborn River 011MT · 1896 · 31/day 4Old Town RD over Jefferson River 004MT · 1897 · 100/day 5Williams Br RD over Jefferson River 046MT · 1898 · 87/day 6No Data Entered over ST Regis RiverMT · 1900 · 50/day 7Vermilion Riv RD over Lyons Creek 032MT · 1900 · 100/day 8N Locate RD over Locate Creek 045MT · 1901 · 23/day 9Birdtail RD over Flat Creek 036MT · 1901 · 100/day 10Sundance Bench RD over Madison River 046MT · 1902 · 100/day For scale: the Brooklyn BridgeNY · 1883 · 111k/day

Each bar runs from the year the bridge was built to today, colored by its overall condition (green good, orange fair, red poor). A white notch marks a recorded reconstruction; many of these bridges have been rebuilt or widened more than once, and the inventory keeps only the most recent date. Daily traffic is the latest count.

When the bridges were built

every bridge in Montana by the decade it was built

Before 1900pre—

1900s'00—

1910s'1047%

1920s'2037%

276

1930s'3018%

188

1940s'4020%

449

1950s'5018%

931

1960s'608%

897

1970s'706%

712

1980s'804%

396

1990s'902%

568

2000s'001%

504

2010s'100%

188

2020s'201%

bridges builtshare rated poor

goodfairpoor

Bars are stacked by today's condition rating. 5,235 bridges are counted. Build years before 1900 are counted only when credible.

The Oldest Bridges in Montana

Bridge	County	Built	Rebuilt	Material	Daily Traffic	Condition
S Howie ST over Reeders Alley 001	Lewis and Clark	1881	1974	Wood or Timber	100	Fair
Old Town RD over Jefferson River 063	Gallatin	1894	1984	Steel	100	Poor
Augusta RD over Dearborn River 011	Lewis and Clark	1896	2003	Steel	31	Fair
Old Town RD over Jefferson River 004	Gallatin	1897		Steel	100	Poor
Williams Br RD over Jefferson River 046	Gallatin	1898	1980	Steel	87	Fair
No Data Entered over ST Regis River	Mineral	1900		Steel	50	Fair
Vermilion Riv RD over Lyons Creek 032	Sanders	1900		Wood or Timber	100	Good
N Locate RD over Locate Creek 045	Custer	1901		Steel	23	Fair
Birdtail RD over Flat Creek 036	Lewis and Clark	1901		Steel	100	Poor
Sundance Bench RD over Madison River 046	Madison	1902	2005	Steel	100	Fair
Brooklyn Bridge over I278 Fdr Drive Fdr Dri		1883	2016		110,939	Poor
Tusler RD over Yellowstone River 094	Custer	1907		Steel	78	Fair
Sunset Hill RD over Blackfoot River 088	Missoula	1907		Steel	100	Poor
Milwaukee RD over Yellowstone River 030	Prairie	1907		Steel	37	Fair
County Road 335 over Usbr Main Canal 001	Richland	1907		Steel	100	Fair
Poor Farm Loop over Big Spring Creek	Fergus	1908	2000	Steel	100	Fair
Ryan Canyon RD over Beaverhead River 023	Beaverhead	1908		Steel	14	Poor
Truly Cutoff RD over Smith River 033	Cascade	1908		Steel	100	Fair
Cottonwood Bench R over Cottonwood Creek 030	Park	1908	2003	Steel	100	Fair
Trout Creek RD over Little Blackfoot R 018	Powell	1908	1999	Steel	100	Fair
County Road 434 over Usbr Main Canal 092	Richland	1908		Steel	100	Fair
Nfsr 834 over Belt Creek	Cascade	1909		Steel	99	Fair
Nfsr 1049 over Belt Creek	Cascade	1909		Prestressed Concrete	99	Fair
Ashbough Trail over Red Rock River 086	Beaverhead	1909		Steel	15	Fair
County Road 323 over Snake Creek 048	Blaine	1911		Steel	100	Fair
Bridge ST over Swan River 110	Flathead	1911		Steel	1,503	Poor
Vine ST over Rattlesnake Creek 002	Missoula	1911	1998	Concrete	2,157	Good
Powderville RD over Spring Creek 019	Custer	1912		Steel	47	Fair
Mt Evans Way over Warm Springs Creek 016	Deer Lodge	1912		Concrete	100	Poor
Roosevelt Parkway over Kootenai River 070	Lincoln	1912	1992	Steel	100	Fair
Horse CR RD over Flathead Creek 020	Park	1912	1974	Steel	100	Fair
Mcleod Main ST over West Boulder River 025	Sweet Grass	1912		Steel	100	Poor
Roe LN over Red Rock River 121	Beaverhead	1913		Steel	4	Poor
Leslie RD over Elbow Creek 036	Carbon	1913	1925	Steel	100	Fair
Bridger Fromberg R over Bluewater Creek 001	Carbon	1913		Concrete	175	Fair
Lovers Lane over Elk Creek 041	Lewis and Clark	1914		Steel	100	Poor
Homestead DR over Pinkham Creek 140	Lincoln	1914		Steel	100	Poor
Chokecherry LN over Little Blackfoot R 027	Powell	1914		Steel	19	Poor
Pumphouse RD over Big Hole River 009	Silver Bow	1914	2015	Steel	100	Fair
25th ST N over Abandoned Railroad	Cascade	1914		Concrete	4,262	Fair
Browns Bridge RD over Big Hole River 123	Beaverhead	1915		Steel	100	Poor
Bluewater RD over Bluewater Creek 038	Carbon	1915		Wood or Timber	100	Fair
Buffalo Trail over Musselshell River 003	Golden Valley	1915	1994	Steel	100	Fair
Augusta-clemons RD over Elk Creek 029	Lewis and Clark	1915		Steel	100	Fair
Potter Creek RD over Potter Creek 005	Park	1915		Steel	100	Poor
County RD 244 over Beaver Creek 132	Phillips	1915	1999	Steel	100	Poor
Camp Creek RD over Pumpkin Creek 021	Powder River	1915	1977	Steel	100	Fair
Beaverton RD over Beaver Creek 104	Valley	1915	1990	Steel	68	Fair
Pishkun Road over Sun River	Lewis and Clark	1916		Steel	40	Poor
S Frontage RD W over Clark Fork 053	Mineral	1916	1999	Steel	174	Poor
Musselshell RD over Musselshell River 015	Musselshell	1916		Steel	34	Fair
Harvey RD over Musselshell River 018	Musselshell	1916		Steel	100	Poor
Old Darby RD over Bitterroot River 074	Ravalli	1917	2001	Steel	289	Fair
Quast LN over Surprise Ditch 060	Ravalli	1918	1970	Concrete	537	Poor
Old Darby RD over Rock Creek 052	Ravalli	1918	1936	Steel	100	Fair
Axtell Anceny RD over Gallatin River 084	Gallatin	1919		Steel	569	Poor
County Road 111 over Horse Prairie Creek 031	Beaverhead	1920		Steel	100	Fair
Brundage LN over Red Rock River 052	Beaverhead	1920		Steel	100	Poor
Middle RD over Battle Creek 056	Blaine	1920	1987	Steel	100	Poor
HWY 287 Bypass over Missouri River 019	Broadwater	1920		Steel	178	Poor
Mill Coulee RD over Mill Coulee Canal 064	Cascade	1920		Wood or Timber	100	Fair
Road 261 over Irrigation Canal 041	Dawson	1920		Wood or Timber	21	Fair
Road 261 over Irrigation Canal 042	Dawson	1920		Wood or Timber	21	Poor
County Road 098 over Clark Fork River 020	Deer Lodge	1920		Steel	100	Poor
Fish Hatchery RD over Post Creek 075	Lake	1920		Concrete	100	Fair
Indian Creek RD over Shields River 027	Park	1920		Steel	100	Fair
Alkali RD over Alkali Creek 001	Phillips	1920	1982	Steel	100	Poor
Frontage Rd-s 205 over Camp Creek	Gallatin	1920	1934	Concrete	2,274	Fair
E Boulevard ST over Big Spring Creek	Fergus	1920		Concrete	675	Fair
W Brassey ST over Big Spring Creek	Fergus	1920		Concrete	2,412	Fair
Road 261 over Bad Route Creek 044	Dawson	1921		Concrete	80	Fair
Frontage Rd-s 205 over Baker Creek	Gallatin	1921	1934	Concrete	2,274	Fair
S 540 - E River RD over Yellowstone River	Park	1921	1958	Concrete	1,160	Fair
Maiden Rock RD over Bridger Creek 107	Gallatin	1922		Steel	100	Poor
Noxon AVE E over Cabinet Gorge Resv 047	Sanders	1922	1998	Steel	100	Poor
US 87-e Main ST over Mill Ditch	Fergus	1922		Concrete	8,747	Fair
Miller Road over Fort Belknap Canal 057	Blaine	1923		Steel	100	Fair
Old US HWY 91 over Muddy Creek Slough 111	Cascade	1923		Steel	100	Fair
Old US HWY 91 over Little Muddy Creek 090	Cascade	1923		Steel	100	Poor
Buttelman RD over Willow Creek 061	Gallatin	1923		Steel	100	Fair
Shields River RD E over Shields River 023	Park	1923		Steel	100	Poor
Howie RD over Drainage 021	Sweet Grass	1923	2001	Steel	164	Fair
Forest Road over Tunnel Creek	Flathead	1924		Concrete	5	Fair
Dry CR School RD over E Gallatin River 032	Gallatin	1924		Steel	100	Fair
HWY 10 W over Ninemile Creek 035	Missoula	1924		Concrete	141	Poor
Going-to-the-sun R over Logan Creek	Flathead	1925		Concrete Continuous	1,230	Fair
Big Swamp CR RD / over Big Hole River 089	Beaverhead	1925	2024	Steel	100	Poor
Birch RD over Ross Fork Creek 018	Judith Basin	1925		Steel	16	Poor
Stage RD over Wild Horse Creek 023	Phillips	1925	1983	Steel	100	Poor
Sand Creek RD over Sand Creek 031	Rosebud	1925		Steel	100	Fair
Frontage RD over Sarpy Creek 003	Treasure	1925		Steel	28	Poor
S 56th ST W over Canyon Creek Ditch 075	Yellowstone	1925		Steel	2,295	Fair
S 540-e River RD over Mill Creek	Park	1925		Steel	909	Fair
Going-to-the-sun R over Mcdonald Creek	Flathead	1926		Masonry	1,230	Fair
Trail Creek RD over Powder River 061	Custer	1926	1998	Steel	100	Fair
Old US 87 over E Fork Pryor Creek 174	Yellowstone	1926		Steel	564	Fair
Fdr #8983 over N Fk Sun River	Lewis and Clark	1927		Steel	99	Poor
E Elk Park RD over Bison Creek 016	Jefferson	1927	1934	Steel	100	Poor
Old US HWY 2 N over Curley Creek 005	Lincoln	1927		Concrete	100	Good
Silver Spring RD over Ruby River 023	Madison	1927		Steel	133	Poor

Oldest bridges in the United States · Longest bridges in Montana