US Bridges

Petroleum County, Montana bridges

Petroleum County has 26 bridges and culverts in the National Bridge Inventory, the oldest built in 1930. 4 (15%) are rated poor. The most common type is stringer/multi-beam or girder (62%).

Bridges
26
Good
31%
Fair
54%
Poor
15%
4 bridges
Average age
58.2 yrs
Posted or closed
10

Map of bridges in Petroleum County

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

Search bridges in Petroleum County

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

Condition

15%poor
Good31%(8)
Fair54%(14)
Poor15%(4)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 0 bridges19101920s: 0 bridges19201930s: 4 bridges419301940s: 5 bridges519401950s: 2 bridges219501960s: 4 bridges419601970s: 3 bridges319701980s: 3 bridges319801990s: 1 bridges119902000s: 0 bridges20002010s: 3 bridges320102020s: 1 bridges12020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. S 200 over Box Elder Creek
    539 vehicles/day
    Fair
  2. S 244 over Mcdonald Creek
    245 vehicles/day
    Fair
  3. S 244 over Pike Creek
    233 vehicles/day
    Fair
  4. S 244 over Drainage
    233 vehicles/day
    Fair
  5. S 244 over Yellow Water Cr-Elk CR
    233 vehicles/day
    Poor

Longest

  1. S 500 over Flatwillow Creek
    336 ft
    Good
  2. S 200 over Box Elder Creek
    184 ft
    Fair
  3. S 244 over Flatwillow Creek
    134 ft
    Fair
  4. S 244 over Mcdonald Creek
    125 ft
    Fair
  5. S 500 over North Willow Creek
    118 ft
    Good

Oldest

  1. Old Cat Creek RD over Box Elder Creek 008
    Built 1930
    Poor
  2. S 244 over Drainage
    Built 1935
    Fair
  3. S 244 over Pike Creek
    Built 1939
    Fair
  4. S 244 over Flatwillow Creek
    Built 1939
    Fair
  5. S 244 over Drainage
    Built 1940
    Fair

All bridges in Petroleum County

Busiest first · showing 1–26 of 26
Bridges in Petroleum County
BridgeLocationBuiltTypeLengthDaily trafficCondition
S 200 over Box Elder Creek
No. P00057145+03141
8M E Winnett1953Tee Beam184 ft539Fair
S 244 over Mcdonald Creek
No. S00244023+03001
Winnett1941Stringer/Multi-beam or Girder125 ft245Fair
S 244 over Pike Creek
No. S00244012+01001
Flatwillow1939Stringer/Multi-beam or Girder38 ft233Fair
S 244 over Drainage
No. S00244012+03001
Flatwillow1935Stringer/Multi-beam or Girder39 ft233Fair
S 244 over Yellow Water Cr-Elk CR
No. S00244018+05001
5M S Winnett1948Stringer/Multi-beam or Girder77 ft233Poor
S 244 over Drainage
No. S00244002+04001
10M SW Flatwillow1940Stringer/Multi-beam or Girder39 ft208Fair
S 244 over Flatwillow Creek
No. S00244005+08001
6M SW Flatwillow1939Stringer/Multi-beam or Girder134 ft208Fair
Horse Camp Road over Sacagawea River
No. 000000202003880
38 Miles North of Winnett2015Stringer/Multi-beam or Girder79 ft100Good
Flatwillow Road over Flatwilow Creek
No. 000000202303875
12M S Winnett2023Stringer/Multi-beam or Girder60 ft100Good
Petrolia Lake RD over Mcdonald Creek 014
No. L35007000+08001
6M E Winnett1980Tee Beam78 ft100Fair
Hughes LN over Flatwillow Creek 016
No. L35015002+08001
16M S Winnett1950Stringer/Multi-beam or Girder40 ft100Poor
Dovetail Valentine over Buffalo Creek 006
No. L35101005+05001
6M N Winnett1983Stringer/Multi-beam or Girder40 ft100Fair
Dovetail Valentine over Box Elder Creek 007
No. L35101006+03001
6M N Winnett1982Tee Beam93 ft100Good
Wildhorse RD over Box Elder Creek 012
No. L35102006+07001
13M NW Winnett1978Tee Beam78 ft100Good
Cemetary RD over So Fk Buffalo CR 011
No. L35103006+02001
6M NW Winnett1960Stringer/Multi-beam or Girder36 ft100Fair
Old Cat Creek RD over Box Elder Creek 008
No. L35104004+03001
5M NE Winnett1930Truss - Thru78 ft100Poor
Teigen Loop over Mcdonald Creek 032
No. L35107000+04501
S Teigen2012Truss - Thru71 ft100Fair
Blakeslee RD over Canal 030
No. L35111006+07001
7M N Teigen1978Slab43 ft100Fair
Welter Divide RD over Box Elder Creek 010
No. L35112003+00001
13M NE Teigen1994Tee Beam80 ft100Good
Main ST over Mcdonald Creek 015
No. M35125000+00101
Winnett-Main ST1940Truss - Thru52 ft64Fair
Petrolia Bench RD over Mcdonald Creek 003
No. L35008002+01001
9M E Winnett1940Stringer/Multi-beam or Girder40 ft46Fair
Kelly RD over Flatwillow Creek 013
No. L35002003+06001
8M S Winnett2013Tee Beam77 ft38Good
S 500 over North Willow Creek
No. S00500023+00001
13M SW Mosby1975Stringer/Multi-beam or Girder118 ft33Good
S 500 over Flatwillow Creek
No. S00500030+00001
6M SW Mosby1962Stringer/Multi-beam or Girder336 ft14Good
Road 317 over Alkali Creek
No. 000061520-00035
Sect 1 T18N R29E1963Stringer/Multi-beam or Girder24 ft2Fair
Road 317 over Drag Creek
No. 000061520-00036
Sect 11 T18N R29E1963Stringer/Multi-beam or Girder24 ft2Poor

Structure types in Petroleum County

Stringer/Multi-beam or Girder1661.5%
Tee Beam623.1%
Truss - Thru311.5%
Slab13.8%

Other counties in Montana