US Bridges

Dewey County, South Dakota bridges

Dewey County has 27 bridges and culverts in the National Bridge Inventory, the oldest built in 1950. 4 (15%) are rated poor. The most common type is stringer/multi-beam or girder (30%).

Bridges
27
Good
56%
Fair
30%
Poor
15%
4 bridges
Average age
39.6 yrs
Posted or closed
6

Map of bridges in Dewey County

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

Search bridges in Dewey County

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Condition

15%poor
Good56%(15)
Fair30%(8)
Poor15%(4)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 0 bridges19101920s: 0 bridges19201930s: 0 bridges19301940s: 0 bridges19401950s: 1 bridges119501960s: 10 bridges1019601970s: 1 bridges119701980s: 2 bridges219801990s: 4 bridges419902000s: 3 bridges320002010s: 4 bridges420102020s: 2 bridges22020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. IRR US212 over Little Bear Ck
    1,291 vehicles/day
    Good
  2. IRR SD020 over Ck
    890 vehicles/day
    Good
  3. IRR SD020 over Ck
    890 vehicles/day
    Good
  4. IRR SD063 over Moreau Rv
    717 vehicles/day
    Fair
  5. IRR US212 over Virgin Ck
    601 vehicles/day
    Good

Longest

  1. IRR BIA RTE 7 over Moreau River
    418 ft
    Fair
  2. IRR SD063 over Moreau Rv
    394 ft
    Fair
  3. IRR BIA RTE 3 over Moreau River
    200 ft
    Good
  4. IRR BIA RTE 8 over Stove Creek
    173 ft
    Good
  5. FAS 6247 over Bear Creek
    149 ft
    Poor

Oldest

  1. IRR State Park RD over Little Moreau Rv
    Built 1950
    Fair
  2. IRR BIA RTE 2 over Little Moreau Creek
    Built 1960
    Fair
  3. FAS 6247 over Bear Creek
    Built 1960
    Poor
  4. IRR BIA RTE 7 over Beaver Creek
    Built 1960
    Fair
  5. IRR BIA RTE 7 over No Mouth Creek
    Built 1960
    Poor

All bridges in Dewey County

Busiest first · showing 1–27 of 27
Bridges in Dewey County
BridgeLocationBuiltTypeLengthDaily trafficCondition
IRR US212 over Little Bear Ck
No. 000000021021307
1.8 E Ziebach CO Line2023Stringer/Multi-beam or Girder119 ft1,291Good
IRR SD020 over Ck
No. 000000021174030
3.3 E JCT Sd 631997Culvert26 ft890Good
IRR SD020 over Ck
No. 000000021191029
5.2 E JCT Sd 631997Culvert31 ft890Good
IRR SD063 over Moreau Rv
No. 000000021148201
13 N JCT US 2121971Stringer/Multi-beam or Girder394 ft717Fair
IRR US212 over Virgin Ck
No. 000000021411226
0.6 W of Laplant1990Slab119 ft601Good
IRR US212 over Virgin Ck
No. 000000021424228
0.6 E of Laplant1988Slab119 ft601Good
IRR SD020 over Little Moreau Rv
No. 000000021139030
0.1 W JCT Sd 631993Culvert24 ft598Good
IRR BIA RTE 3 over Veo Creek
No. 0000A01340B0004
16 KM East of Whitehorse2016Stringer/Multi-beam or Girder76 ft550Good
IRR County Road over Creek
No. 000000021313140
0.5E White Horse2020Tee Beam88 ft451Good
IRR BIA RTE 3 over Moreau River
No. 00000000000A110
3.8 KM SE of Whitehorse1987Stringer/Multi-beam or Girder200 ft305Good
IRR BIA RTE 3 over Hand Boy Creek
No. 00000000000A005
3.2KM W of RTE 7 Junction1964Channel Beam94 ft200Fair
IRR BIA RTE 4 over Green Grass Creek
No. 0000A01340B0121
3.2 KM West of HWY SD-632013Tee Beam100 ft195Good
IRR BIA RTE 2 over Red Water Creek
No. 00000000000A002
8.5 KM E of Sd HWY 631961Channel Beam70 ft180Poor
IRR BIA Route 8 over East Branch Willow Creek
No. 00000000000A146
RTE 8 over E Brch Wil Crk2008Tee Beam100 ft160Good
IRR BIA RTE 8 over Stove Creek
No. 0000A01340B0009
7.1 KM SW of US-212/BIA-82013Slab173 ft110Good
IRR BIA RTE 2 over Little Moreau Creek
No. 00000000000A003
3.2 KM W of White Horse1960Slab80 ft109Fair
IRR BIA RTE 7 over Virgin Creek
No. 00000000000A111
0.5 KM East of Promise1961Channel Beam148 ft105Poor
IRR BIA RTE 7 over Moreau River
No. 00000000000A143
.7 KM North of Promise1961Stringer/Multi-beam or Girder418 ft105Fair
FAS 6247 over Bear Creek
No. 000000021030282
0.7 W 3.1 N Lantry1960Stringer/Multi-beam or Girder149 ft103Poor
IRR BIA RTE 7 over Beaver Creek
No. 00000000000A006
7.2 KM East of Promise1960Channel Beam94 ft100Fair
BIA Highway 4 over Creek
No. 000000021438079
2N Promise2008Tee Beam112 ft90Good
IRR BIA RTE 7 over Buffalo Skin Creek
No. 0000A01340B0131
15.8 KM North of US-2122013Tee Beam76 ft77Good
IRR BIA RTE 7 over No Mouth Creek
No. 00000000000A007
25.7 KM No. of US HWY 2121960Channel Beam101 ft70Poor
IRR County Road over Creek
No. 000000021020261
1.7 W 5.2 N Lantry1965Stringer/Multi-beam or Girder24 ft55Fair
IRR County Road over Creek
No. 000000021138120
7.0W 9.0S Timber Lk1960Culvert20 ft38Fair
IRR County Road over Trib to Little Moreau R
No. 000000021136060
3.0S 2.5E Firesteel2008Culvert41 ft10Good
IRR State Park RD over Little Moreau Rv
No. 000000021207087
5.7S .3W Timber Lk1950Stringer/Multi-beam or Girder32 ft5Fair

Structure types in Dewey County

Stringer/Multi-beam or Girder829.6%
Culvert518.5%
Channel Beam518.5%
Tee Beam518.5%
Slab414.8%

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