US Bridges

Sully County, South Dakota bridges

Sully County has 31 bridges and culverts in the National Bridge Inventory, the oldest built in 1912. 6 (19%) are rated poor. The most common type is culvert (45%).

Bridges
31
Good
45%
Fair
35%
Poor
19%
6 bridges
Average age
46.5 yrs
Posted or closed
2

Map of bridges in Sully County

Green good, amber fair, red poor. Click a marker for details.

Search bridges in Sully County

Type at least two characters, or pick a condition or type, to search every bridge in the county.

Condition

19%poor
Good45%(14)
Fair35%(11)
Poor19%(6)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 2 bridges219101920s: 0 bridges19201930s: 3 bridges319301940s: 0 bridges19401950s: 1 bridges119501960s: 8 bridges819601970s: 2 bridges219701980s: 1 bridges119801990s: 4 bridges419902000s: 4 bridges420002010s: 3 bridges320102020s: 3 bridges32020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. US083 over Okobojo Ck
    1,490 vehicles/day
    Good
  2. 185 ST over Ck
    760 vehicles/day
    Good
  3. SD1804 over Cow Ck
    632 vehicles/day
    Good
  4. SD1804 over Okobojo Ck
    632 vehicles/day
    Fair
  5. SD1804 over Ck
    261 vehicles/day
    Good

Longest

  1. SD1804 over Okobojo Ck
    113 ft
    Fair
  2. 291 Avenue over Okobojo Ck
    98 ft
    Fair
  3. US083 over Okobojo Ck
    92 ft
    Good
  4. 188 Street over Ck
    74 ft
    Poor
  5. 176 Street over Okobojo Ck
    66 ft
    Good

Oldest

  1. 172nd ST over Okobojo Ck
    Built 1912
    Fair
  2. 195 Street over Medicine Knoll Ck
    Built 1913
    Poor
  3. 185 Street over Medicine Knoll Ck
    Built 1930
    Fair
  4. 291 Avenue over Okobojo Ck
    Built 1936
    Fair
  5. FAS 6155 over Okobojo Ck
    Built 1936
    Fair

All bridges in Sully County

Busiest first · showing 1–31 of 31
Bridges in Sully County
BridgeLocationBuiltTypeLengthDaily trafficCondition
US083 over Okobojo Ck
No. 000000060310074
3.4 S of Agar1998Culvert92 ft1,490Good
185 ST over Ck
No. 000000060253130
6.2W Onida2017Culvert52 ft760Good
SD1804 over Cow Ck
No. 000000060129235
0.4 N Hughes CO Line2007Culvert25 ft632Good
SD1804 over Okobojo Ck
No. 000000060130188
5.2 N Hughes CO Line1972Slab113 ft632Fair
SD1804 over Ck
No. 000000060190070
6.0 N JCT CO RD to Onida1995Culvert20 ft261Good
291 Avenue over Okobojo Ck
No. 000000060190165
3.5E & 0.6N Okobojo1936Stringer/Multi-beam or Girder98 ft250Fair
176 Street over Okobojo Ck
No. 000000060358040
4E Agar2023Culvert66 ft230Good
196 ST over Cow Ck
No. 000000060172240
6.9S & 1.6E Okobojo2006Culvert29 ft180Good
185 Street over Medicine Ck
No. 000000060456130
13.6E Onida2021Culvert57 ft150Good
185 Street over Medicine Knoll Ck
No. 000000060462130
14.2E Onida1930Stringer/Multi-beam or Girder30 ft150Fair
305 Avenue over Okobojo Ck
No. 000000060320059
1.9S & 0.8E Agar1990Culvert50 ft80Good
188 Street over Ck
No. 000000060107160
20.3W & 3S Onida1964Channel Beam74 ft75Poor
315 Avenue over Medicine Ck
No. 000000060420204
11E & 7.4S Onida1956Channel Beam53 ft64Poor
182 Street over Ck
No. 000000060275100
4W & 3N Onida1960Channel Beam63 ft49Fair
296 Avenue over Okobojo Ck
No. 000000060155175
15.5W & 4.5S Onida2010Culvert39 ft48Good
172 Street over Ck
No. 000000060267000
4N & 4.3W of Agar2023Culvert46 ft48Good
300 Avenue over Ck
No. 000000060280002
3W & 3.8N Agar1981Tee Beam45 ft48Fair
FAS 6155 over Okobojo Ck
No. 000000060380018
6.6E & 2.2N Agar1936Slab53 ft47Fair
305 Avenue over Ck
No. 000000060320226
1E & 9.5S Onida2009Culvert21 ft35Good
295th Ave over Ck
No. 000000060230131
8W & 0.1S of Onida2014Culvert29 ft26Good
172nd ST over Okobojo Ck
No. 000000060281000
4N & 2.9W Agar1912Stringer/Multi-beam or Girder31 ft25Fair
306 Avenue over Okobojo Ck
No. 000000060330048
2E & 0.8S Agar1968Channel Beam38 ft25Fair
193 Street over Ck
No. 000000060332210
7S & 1.2E Onida1968Channel Beam31 ft25Fair
308 Avenue over Okobojo Ck
No. 000000060350045
4E & 0.4S Agar1974Tee Beam50 ft25Fair
317 Avenue over Medicine Knoll Ck
No. 000000060440202
12.5 & 7.2S Onida1995Culvert25 ft25Good
185 ST over Medicine Knoll Ck
No. 000000060468130
14.8E Onida2005Culvert29 ft25Good
320 Avenue over Ck
No. 000000060470231
16E & 10.2S Onida1961Channel Beam25 ft25Poor
301 Avenue over Okobojo Creek
No. 000000060280096
3W & 3.4N Onida1961Channel Beam62 ft20Poor
302 Avenue over Okobojo Ck
No. 000000060290093
3.7N & 2.5W Onida1962Channel Beam62 ft20Poor
309 Avenue over Okobojo Ck
No. 000000060360038
5E & 0.3N Agar1967Channel Beam31 ft20Fair
195 Street over Medicine Knoll Ck
No. 000000060392230
10S & 8.2E Onida1913Truss - Thru51 ft10Poor

Structure types in Sully County

Culvert1445.2%
Channel Beam929.0%
Stringer/Multi-beam or Girder39.7%
Slab26.5%
Tee Beam26.5%
Truss - Thru13.2%

Other counties in South Dakota