US Bridges

Granite County, Montana bridges

Granite County has 73 bridges and culverts in the National Bridge Inventory, the oldest built in 1931. 9 (12%) are rated poor. The most common type is stringer/multi-beam or girder (70%).

Bridges
73
Good
38%
Fair
49%
Poor
12%
9 bridges
Average age
51 yrs
Posted or closed
2

Map of bridges in Granite County

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

Search bridges in Granite County

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

Condition

12%poor
Good38%(28)
Fair49%(36)
Poor12%(9)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 0 bridges19101920s: 0 bridges19201930s: 5 bridges519301940s: 1 bridges119401950s: 7 bridges719501960s: 20 bridges2019601970s: 16 bridges1619701980s: 8 bridges819801990s: 7 bridges719902000s: 5 bridges520002010s: 4 bridges420102020s: 0 bridges2020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. I 90 over Harvey Creek
    13,081 vehicles/day
    Good
  2. I 90 over Drainage
    13,081 vehicles/day
    Good
  3. I 90 over Sep Bearmouth Road
    13,081 vehicles/day
    Good
  4. I 90 over Clark Fork River
    13,081 vehicles/day
    Poor
  5. I 90 over Rattler Gulch
    13,081 vehicles/day
    Fair

Longest

  1. I 90 over Clark Fork River
    348 ft
    Fair
  2. No Data Entered over Boulder CR
    309 ft
    Poor
  3. S 1 over Clark Fork
    301 ft
    Poor
  4. S Main Street over Clark Fork River 020
    267 ft
    Poor
  5. I 90 over Clark Fork River
    255 ft
    Poor

Oldest

  1. S 1 over Fred Burr Creek
    Built 1931
    Fair
  2. S 1 over Flint Creek
    Built 1931
    Fair
  3. Many Glacier Road over Windy Creek
    Built 1931
    Fair
  4. Main ST over Bergman Slough 019
    Built 1934
    Fair
  5. S Main Street over Clark Fork River 020
    Built 1934
    Poor

All bridges in Granite County

Busiest first · showing 1–73 of 73
Bridges in Granite County
BridgeLocationBuiltTypeLengthDaily trafficCondition
I 90 over Harvey Creek
No. I00090141+01001
3M E Bearmouth Int1970Culvert23 ft13,081Good
I 90 over Drainage
No. I00090142+09001
4.8M E Bearmouth Int1971Culvert25 ft13,081Good
I 90 over Sep Bearmouth Road
No. I00090143+06511
10.5M W Drummond1970Stringer/Multi-beam or Girder119 ft13,081Good
I 90 over Clark Fork River
No. I00090148+04361
5M W Drummond1970Stringer/Multi-beam or Girder255 ft13,081Poor
I 90 over Rattler Gulch
No. I00090149+03001
4.1M W Drummond1971Slab21 ft13,081Fair
I 90 over Clark Fork River
No. I00090137+03931
0.6M W Bearmouth1970Stringer/Multi-beam or Girder348 ft11,802Fair
I 90 over Int Bearmouth
No. I00090138+00851
Bearmouth1970Stringer/Multi-beam or Girder120 ft6,541Fair
I 90 over Int Bearmouth
No. I00090138+00852
Bearmouth1970Stringer/Multi-beam or Girder120 ft6,541Good
I 90 over Int E Drummond
No. I00090154+02801
Drummond1966Stringer/Multi-beam or Girder135 ft4,666Fair
I 90 over Int E Drummond
No. I00090154+02802
Drummond1966Stringer/Multi-beam or Girder135 ft4,666Good
I 90 over Sep S-271
No. I00090155+07871
1.2M E Drummond1966Stringer/Multi-beam or Girder130 ft4,666Good
I 90 over Sep S-271
No. I00090155+07872
1.2M E Drummond1966Stringer/Multi-beam or Girder130 ft4,666Fair
I 90 over Int W Drummond
No. I00090153+03561
Drummond1966Stringer/Multi-beam or Girder125 ft4,361Fair
I 90 over Int W Drummond
No. I00090153+03562
Drummond1966Stringer/Multi-beam or Girder125 ft4,361Fair
I 90 over Sep Edwards Gulch Road
No. I00090153+07641
Drummond1966Stringer/Multi-beam or Girder128 ft4,361Good
I 90 over Sep Edwards Gulch Road
No. I00090153+07642
Drummond1966Stringer/Multi-beam or Girder130 ft4,361Good
S 1 over Fred Burr Creek
No. P00019035+03141
2M S Philipsburg1931Tee Beam63 ft1,695Fair
S 1 over Clark Fork
No. P00019063+02511
Drummond1966Stringer/Multi-beam or Girder301 ft1,354Poor
S 1 over Abandoned Railroad
No. P00019063+04351
Drummond1966Stringer/Multi-beam or Girder165 ft1,354Fair
S 1 over RR
No. P00019063+08231
Drummond1966Stringer/Multi-beam or Girder190 ft1,354Fair
S 1 over Willow Creek
No. P00019059+07341
4M S Drummond1999Stringer/Multi-beam or Girder67 ft1,325Good
S 1 over Boulder Creek
No. P00019049+00211
Maxville1986Stringer/Multi-beam or Girder84 ft1,144Fair
S 1 over Flint Creek
No. P00019053+03701
4M N Maxville1931Tee Beam115 ft1,144Fair
Upper Rock CR RD over Stony Creek 011
No. L20002013+00001
19M W Phillipsburg1999Girder and Floorbeam System50 ft603Fair
Upper Rock CR RD over Rock Creek 010
No. L20002014+03001
20M W Phillipsburg1976Tee Beam90 ft603Good
Rock Creek RD over Ranch Creek 009
No. L20002039+06001
10M S Rock Creek Int1977Stringer/Multi-beam or Girder31 ft603Fair
Walberg Ranch LN over Rock Creek 054
No. L20129000+01001
25M W Phillipsburg1987Stringer/Multi-beam or Girder81 ft603Good
Main ST over Bergman Slough 019
No. M20035000+00101
Drummond-Main Street1934Stringer/Multi-beam or Girder26 ft457Fair
Many Glacier Road over Windy Creek
No. 1430031P0000000
8.8 Miles West of U.S. Ro1931Slab37 ft452Fair
S Main Street over Clark Fork River 020
No. L20016000+05001
S Drummond1934Stringer/Multi-beam or Girder267 ft371Poor
Marshall Creek RD over Flint Creek
No. S00348000+04001
1M W Philipsburg1956Stringer/Multi-beam or Girder39 ft352Fair
Mt 38-SKALKAHO RD over Rock Creek 013
No. L20001016+09001
10M W Porters Corner1989Stringer/Multi-beam or Girder141 ft278Good
N Sandin Ranch LN over Middle Fork Rock CR 032
No. L20146000+01001
15M SW Phillipsburg2004Tee Beam85 ft278Good
Frontage Road 153 over Clark Fork River 034
No. L20153000+01001
14M W Drummond1970Stringer/Multi-beam or Girder170 ft272Fair
Mt 38-SKALKAHO RD over W Fork Rock Creek 006
No. L20001010+06001
10M E Skalkaho Pass1991Stringer/Multi-beam or Girder62 ft223Good
Mt 38-SKALKAHO RD over W Fork Rock Creek 012
No. L20001013+09001
12M E Skalkaho Pass1974Tee Beam115 ft223Good
S 512 over Flint Creek
No. S00512000+07001
1M E Hall1964Stringer/Multi-beam or Girder103 ft222Good
Moose Lake RD over E Fork Rock Creek 030
No. L20006000+01001
10M SW Porters Corner1950Stringer/Multi-beam or Girder31 ft186Good
Marshall Creek RD over Rock Creek
No. S00348014+02001
14M W Philipsburg1959Stringer/Multi-beam or Girder102 ft161Poor
Bear Gulch RD over Clark Fork River 002
No. L20009000+01001
1M NE Bearmouth1986Tee Beam170 ft130Poor
I 90 over Antelope Creek
No. I00090142+08784
11.2M W Drummond1971Stringer/Multi-beam or Girder43 ft100Poor
Mullan RD E over Flint Creek Overflow 084
No. L20007000+08001
2M S Drummond1998Tee Beam49 ft100Good
Mullan RD E over Flint Creek 001
No. L20007001+00001
2M S Drummond1998Tee Beam60 ft100Fair
Maxville RD over Boulder Creek 014
No. L20010000+05001
1M S Maxville2012Channel Beam53 ft100Good
Black Pine Road over Flint Creek 007
No. L20026000+03001
2M NW Phillipsburg1991Stringer/Multi-beam or Girder40 ft100Good
Henderson Creek Ro over Flint Creek 035
No. L20028000+05001
11M S Drummond2013Tee Beam87 ft100Good
Metesh Lane over Flint Creek 055
No. L20036000+03001
5M SW Phillipsburg2009Slab30 ft100Good
Douglas Creek Road over Flint Creek 004
No. L20049000+01001
8M S Drummond2015Tee Beam81 ft100Good
Ross Fork Road over Middle Fork Rock CR 021
No. L20067000+04001
15M SW Phillipsburg1991Stringer/Multi-beam or Girder82 ft100Good
Gold Coin Road over Flint Creek 017
No. L20101000+04001
13M S Drummond1984Stringer/Multi-beam or Girder47 ft100Fair
No Data Entered over Flint Creek
No. 010208000003031
5 Mi. N. of P-Burg on HWY2001Stringer/Multi-beam or Girder53 ft50Fair
No Data Entered over Middle Fork Rock CR
No. 010903000000026
At Junction to Moose Lake1956Stringer/Multi-beam or Girder51 ft50Fair
No Data Entered over Copper CR
No. 010903000000027
After Copper Creek Cg1956Stringer/Multi-beam or Girder47 ft50Fair
No Data Entered over Spillway
No. 010903000000042
Spillway1958Stringer/Multi-beam or Girder113 ft50Fair
No Data Entered over West Fork Rock CR
No. 010903000000048
West Fork Rock CR1965Stringer/Multi-beam or Girder51 ft50Fair
No Data Entered over Bowles CR
No. 010903000000051
Bowles CR1971Stringer/Multi-beam or Girder33 ft50Fair
No Data Entered over Ross Fork
No. 010903000000068
Ross Fork1962Stringer/Multi-beam or Girder70 ft50Fair
No Data Entered over Ross Fork
No. 010903000000070
Ross Fork1967Stringer/Multi-beam or Girder40 ft50Poor
No Data Entered over Swamp Gul
No. 010903000001023
Swamp Gulch1987Stringer/Multi-beam or Girder28 ft50Poor
No Data Entered over Boulder CR
No. 010903000001025
Boulder Creek1949Stringer/Multi-beam or Girder309 ft50Poor
Grizzle Camp RD over Ranch CR
No. 011603000000130
Grizzly Camp1958Stringer/Multi-beam or Girder24 ft50Fair
No Data Entered over Hogback Creek
No. 011603000010740
No Data Entered2008Slab24 ft50Fair
Cable Mtn Campgrou over N Fk Flint Creek
No. 010208000019132
No Data Entered2015Slab35 ft40Good
No Data Entered over Gold Creek
No. 010901000001026
Jackson Park Road1975Stringer/Multi-beam or Girder41 ft40Fair
Road 5156 over Upper Willow CR
No. 010903000000001
Upper Willow CR1968Stringer/Multi-beam or Girder32 ft40Fair
No Data Entered over Middle Fork Rock CR
No. 010903000000014
Middle Fork Rock CR1965Stringer/Multi-beam or Girder37 ft40Fair
No Data Entered over Meadow CR
No. 010903000000015
Beginning of Mcdougal RD1978Stringer/Multi-beam or Girder28 ft40Good
No Data Entered over West Fork Rock CR
No. 010903000000049
West Fork Rock CR1969Stringer/Multi-beam or Girder36 ft40Fair
No Data Entered over Middle Fork Rock CR
No. 010903000000053
Before Kaiser Lake1965Stringer/Multi-beam or Girder51 ft40Fair
No Data Entered over Ross Fork
No. 010903000000069
Ross Fork1961Stringer/Multi-beam or Girder47 ft40Fair
Road 358 over Harvey Creek
No. 011603000001033
Harvey Creek1984Slab22 ft40Good
Rock Creek Road over Cougar Creek
No. 011606000011429
T08N R17W S072008Slab32 ft40Good
4638: Scotchman Gu over Upper Willow Creek
No. 000000000L59187
14 MI W of MT1/US10A1980Slab41 ft25Fair

Structure types in Granite County

Stringer/Multi-beam or Girder5169.9%
Tee Beam1013.7%
Slab811.0%
Culvert22.7%
Channel Beam11.4%
Girder and Floorbeam System11.4%

Other counties in Montana