Oldest Bridges in Wyoming

The oldest bridge in Wyoming is the US 30 Service Road over Smiths Fork River in Lincoln County, built in 1908.

Age, drawn to scale

The 10 oldest in Wyoming, one timeline

187519001925195019752000today

1US 30 Service Road over Smiths Fork RiverWY · 1908 · 26/day 2Grand Teton Np RD over Snake RiverWY · 1911 · 1.8k/day 3County Road 60 over Ft Laramie CanalWY · 1913 · 2/day 4SH Cnty RD 2 over North Piney CreekWY · 1914 · 32/day 5County Road 90 over Ft Laramie CanalWY · 1915 · 2/day 6Lone Star Geyser R over Firehole RiverWY · 1915 · 250/day 7Cb Cnty RD 660 over North Platte RiverWY · 1915 · 69/day 8Cb Cnty RD 680 over Encampment RiverWY · 1915 · 71/day 9Cb Cnty RD 3 over Medicine Bow RiverWY · 1915 · 59/day 10SH Cnty RD 140 over Bnsf RailwayWY · 1916 · 136/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 Wyoming by the decade it was built

Before 1900pre—

1900s'00—

1910s'10—

1920s'2048%

1930s'3035%

1940s'4018%

348

1950s'5010%

866

1960s'606%

511

1970s'708%

456

1980s'807%

284

1990s'904%

271

2000s'000%

186

2010s'101%

2020s'200%

bridges builtshare rated poor

goodfairpoor

Bars are stacked by today's condition rating. 3,138 bridges are counted. Build years before 1900 are counted only when credible.

The Oldest Bridges in Wyoming

Bridge	County	Built	Rebuilt	Material	Daily Traffic	Condition
US 30 Service Road over Smiths Fork River	Lincoln	1908		Steel	26	Poor
Grand Teton Np RD over Snake River	Teton	1911	1989	Concrete Continuous	1,800	Fair
County Road 60 over Ft Laramie Canal	Goshen	1913		Concrete	2	Fair
SH Cnty RD 2 over North Piney Creek	Sheridan	1914		Steel	32	Fair
County Road 90 over Ft Laramie Canal	Goshen	1915		Concrete	2	Fair
Lone Star Geyser R over Firehole River	Teton	1915	1982	Prestressed Concrete	250	Fair
Cb Cnty RD 660 over North Platte River	Carbon	1915		Steel Continuous	69	Poor
Cb Cnty RD 680 over Encampment River	Carbon	1915		Steel	71	Poor
Cb Cnty RD 3 over Medicine Bow River	Carbon	1915		Steel	59	Poor
SH Cnty RD 140 over Bnsf Railway	Sheridan	1916		Steel	136	Poor
Brooklyn Bridge over I278 Fdr Drive Fdr Dri		1883	2016		110,939	Poor
La Cnty RD 236-1 over Little Horse Creek	Laramie	1920		Concrete	29	Fair
Ni Cnty RD 9 over Cheyenne River	Niobrara	1920	1960	Steel	3	Poor
SH Cnty RD 40 over Wild Horse Creek	Sheridan	1920	1940	Steel	8	Fair
SH Cnty RD 149 over Piney Creek	Sheridan	1920	1993	Steel	241	Fair
Fr Cnty RD 314 over Big Wind River	Fremont	1920		Steel	40	Poor
Fr Cnty RD 238 over Big Wind River	Fremont	1921		Steel	81	Poor
Fr Cnty RD 497 over Haymaker Draw	Fremont	1921		Concrete	140	Poor
Wyo 319 over Middle Fork Bear Creek	Platte	1922	1952	Concrete	182	Fair
Wyo 319 over North Fork Bear Creek	Platte	1922	1952	Concrete	182	Fair
Hayden Arch Road over Shoshone River	Park	1924		Concrete	100	Poor
Na Cnty RD 110 over Cloud Creek	Natrona	1924		Steel	1,070	Fair
Go Cnty RD 33f over Interstate Canal	Goshen	1924	1960	Steel	155	Fair
Fountain Freight R over Firehole River	Teton	1925		Steel	10	Poor
Pa Cnty RD 4dt over Wood River	Park	1925		Steel	178	Fair
Fr Cnty RD 298 over Wind River	Fremont	1925		Steel	26	Poor
Go Cnty RD 35d over Fort Laramie Canal	Goshen	1925	1960	Wood or Timber	52	Poor
US 14 over Little Tongue River	Sheridan	1926	1994	Concrete	738	Fair
Co Cnty RD 36 over Laprele Creek	Converse	1926	1952	Concrete	20	Fair
Bh Cnty RD 229 over Antelope Creek	Big Horn	1926		Concrete	343	Fair
Bh Cnty RD 72 over Shoshone River	Big Horn	1926		Steel	119	Poor
Lake Side Drive over Guernsey Dam Spillway	Platte	1927		Concrete	100	Fair
I-25 Service Road over Spring Creek	Platte	1927		Concrete	58	Fair
Wyo 435 over Tensleep Creek	Washakie	1929		Steel	164	Poor
We Cnty RD 1a over Bnsf Railway	Weston	1929		Steel	136	Poor
Texas Trail over North Platte River	Carbon	1929		Steel	50	Poor
Na Cnty RD 412 over Hogback Draw	Natrona	1929		Wood or Timber	165	Poor
Na Cnty RD 412 over Mowrey Draw	Natrona	1929		Steel	165	Fair
Wa Cnty RD R34 over Spillway Hanover Canal	Washakie	1929		Wood or Timber	119	Poor
I-80 Service Road over North Platte River	Carbon	1930		Steel	782	Poor
Cb Cnty RD 203 over North Platte River	Carbon	1930	1960	Steel	97	Poor
SH Cnty RD 77 over Little Goose Creek	Sheridan	1930	2015	Steel	116	Fair
Jo Cnty RD 78 over Red Wall Draw	Johnson	1930	1965	Steel	13	Fair
Bh Cnty RD L55 over Big Horn River	Big Horn	1930	1979	Steel	88	Poor
10th Street over Canal No 2	Platte	1930	1950	Steel	138	Poor
Pa Cnty RD 6nx over Rattlesnake Creek	Park	1930		Concrete	65	Fair
Pl Cnty RD 87 over Canal No 1	Platte	1931		Wood or Timber	138	Fair
Ui Cnty RD 233 over Blacks Fork River	Uinta	1931		Steel	42	Poor
Ui Cnty RD 233 over Blacks Fork River	Uinta	1931		Steel	42	Fair
Grand Loop Road over Lava Creek	Teton	1932		Steel	1,807	Fair
I-25 Service Road over South Fork Powder River	Johnson	1932		Steel Continuous	79	Fair
Fr Cnty RD 298 over Dry Creek	Fremont	1932		Steel	26	Fair
Fr Cnty RD 523 over Twin Creek	Fremont	1932		Wood or Timber	8	Poor
We Cnty RD 1a over Beaver Creek	Weston	1933		Steel	136	Poor
We Cnty RD 1a over Unnamed Draw	Weston	1933		Wood or Timber	136	Poor
Grand Loop Road over Otter Creek	Teton	1934		Concrete	1,807	Poor
South Entrance Roa over Crawfish Creek	Teton	1934		Concrete	3,952	Fair
Northeast Entrance over Soda Butte Creek	Park	1934		Concrete Continuous	1,982	Fair
Northeast Entrance over Soda Butte Creek	Park	1934		Steel	1,982	Fair
Northeast Entrance over Pebble Creek	Park	1934		Concrete Continuous	1,982	Fair
Wyo 130 over North Brush Creek	Carbon	1934	1964	Steel	733	Fair
La Cnty RD 210-2 over Uprr	Laramie	1934		Steel	640	Poor
Culbertson Avenue over Big Horn River	Washakie	1934		Steel	1,045	Poor
U.s. Route 89 over Arizona Creek	Teton	1935		Concrete Continuous	5,000	Fair
Grand Loop Road over Nez Perce Creek	Teton	1935	1997	Concrete Continuous	1,807	Fair
Grand Loop Road over Tower Creek	Teton	1935		Concrete	1,807	Fair
Firehole Lake Driv over Thermal Area Drainage	Teton	1935		Wood or Timber	1,500	Fair
Firehole Lake Driv over Thermal Area Drainage	Teton	1935		Wood or Timber	1,500	Poor
Firehole Lake Driv over Thermal Area Drainage	Teton	1935		Wood or Timber	1,500	Poor
I-25 Service Road over Bnsf Railway	Platte	1935		Steel	87	Poor
US 30 over Smiths Fork River	Lincoln	1935	1977	Steel	2,518	Fair
US 30 over Spring Creek	Lincoln	1935	1977	Steel	2,518	Fair
Wyo 196 over North Fork Powder River	Johnson	1935		Steel	310	Fair
Wyo 319 over Baxter Draw	Platte	1935		Concrete Continuous	208	Good
La Cnty RD 124-2 over Lodgepole Creek	Laramie	1935		Steel	481	Poor
SH Cnty RD 98 over Wolf Creek	Sheridan	1935		Steel	23	Fair
3rd Street over Big Wind River	Fremont	1935		Steel	274	Fair
Ames Avenue over Unnamed Draw	Laramie	1935		Concrete Continuous	7,540	Fair
Wa Cnty RD 580a over Nowood River	Washakie	1935		Steel	16	Fair
Wa Cnty RD 580 over East Fork Sand Creek	Washakie	1935		Wood or Timber	4	Poor
US 30 Service Road over Spring Creek	Lincoln	1935		Steel	26	Fair
Grand Loop Road over Gibbon River	Teton	1936	2002	Steel Continuous	1,807	Fair
East Entrance Road over Yellowstone River	Teton	1936		Wood or Timber	1,286	Fair
Northeast Entrance over Dry Creek	Park	1936		Concrete	1,982	Fair
Northeast Entrance over Dry Creek	Park	1936		Concrete	1,982	Fair
Northeast Entrance over Dry Creek	Park	1936		Concrete	1,982	Fair
Wyo 319 over Dry Wash	Platte	1936		Concrete Continuous	417	Good
Fdr over Little Popo Agie	Fremont	1937	1999	Steel	50	Good
US 20 over Owl Creek	Hot Springs	1937	1959	Steel	1,934	Fair
Pa Cnty RD L9a over Bitter Creek	Park	1937		Steel	1,493	Poor
Clendenning Street over Horse Creek	Fremont	1937		Steel	450	Fair
Wa Cnty RD 580a over Big Cottonwood Creek	Washakie	1937		Wood or Timber	16	Poor
Bull Lake Road over Bull Lake Dam Spillway	Fremont	1938		Steel	5	Poor
US 89 over Flat Creek	Teton	1938	1969	Steel	15,780	Poor
Grand Loop Road over Gardner River	Park	1939	1977	Steel	4,350	Fair
US 87 Bus over Little Goose Creek	Sheridan	1939		Steel	1,679	Fair
Fdr 843 over Beaver Creek	Crook	1940	1987	Wood or Timber	100	Good
Fdr over N.fork Shoshone	Park	1940	1999	Steel	25	Good
Wyo 789 over Muddy Creek	Carbon	1940		Steel Continuous	1,817	Good
2nd Street over Dead Horse Canyon Creek	Sweetwater	1940		Steel	5,361	Fair

Oldest bridges in the United States · Longest bridges in Wyoming