US Bridges

Minnesota bridges

Minnesota reports 13,551 bridges and culverts across 87 counties. 609 (4.5%) are rated in poor condition, and 1,135 are posted with load limits or closed. The oldest structure still in the inventory dates from 1884.

Bridges
13,551
Counties
87
Good
56%
Fair
39%
Poor
4%
609 bridges
Average age
38.5 yrs

Find a bridge in Minnesota

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

Counties

Circle size reflects the number of bridges

Condition

4%poor
Good56%(7,636)
Fair39%(5,306)
Poor4%(609)

Counties with the highest share of poor bridges

Structure types

Structure typeBridgesShare
Culvert6,18445.6%
Stringer/Multi-beam or Girder4,58933.9%
Slab1,77013.1%
Tee Beam4363.2%
Channel Beam2321.7%
Girder and Floorbeam System980.7%
Box Beam or Girders - Multiple660.5%
Arch - Deck510.4%
Frame490.4%
Truss - Thru420.3%
Segmental Box Girder140.1%
Arch - Thru70.1%
Truss - Deck30.0%
Box Beam or Girders - Single or Spread30.0%
Other20.0%
Suspension10.0%
Stayed Girder10.0%
Movable - Lift10.0%
Movable - Bascule10.0%
Movable - Swing10.0%

When Minnesota's bridges were built

<1900: 8 bridges8<19001900s: 32 bridges3219001910s: 107 bridges10719101920s: 207 bridges20719201930s: 403 bridges40319301940s: 233 bridges23319401950s: 464 bridges46419501960s: 1,277 bridges1.3k19601970s: 2,177 bridges2.2k19701980s: 2,123 bridges2.1k19801990s: 2,059 bridges2.1k19902000s: 2,096 bridges2.1k20002010s: 1,626 bridges1.6k20102020s: 739 bridges7392020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. I 494 over Knox Ave (brt)
    Hennepin County · 177,000 vehicles/day
    Good
  2. I 35W over Storm Sewer
    Hennepin County · 170,406 vehicles/day
    Good
  3. I 35W over Storm Sewer
    Hennepin County · 170,406 vehicles/day
    Good
  4. I 494 over TH 100
    Hennepin County · 167,328 vehicles/day
    Good
  5. I 694 over TH 252; SB Off Ramp
    Hennepin County · 157,688 vehicles/day
    Fair

Longest

  1. US 2 over ST Louis R TH35; RR
    St. Louis County · 8,320 ft
    Fair
  2. I 535 over ST Louis R; RR Street
    St. Louis County · 7,980 ft
    Poor
  3. US 169 over Mn Valley Trail;mn River
    Hennepin County · 5,855 ft
    Fair
  4. US 169 over Mn Valley Trail;mn River
    Hennepin County · 5,848 ft
    Fair
  5. Mn 77 over Minnesota R ; Black Dog
    Hennepin County · 5,185 ft
    Fair

Oldest

  1. Mn 5 over Rcrra
    Ramsey County · Built 1884
    Fair
  2. M 2105 over E Chan Mississippi River
    Hennepin County · Built 1887
    Fair
  3. M 1608 over Minnehaha Creek
    Hennepin County · Built 1890
    Poor
  4. T 516 over Beaver Creek
    Renville County · Built 1890
    Poor
  5. Msas 226 over BNSF RR
    Hennepin County · Built 1893
    Fair

Newest

  1. Csah 9 over Elk Creek
    Rock County · Built 2025
    Good
  2. I 494 EB (temp Wb) over I 35W
    Hennepin County · Built 2024
    Good
  3. I 494 over 35W NB to 494 WB Ramp
    Hennepin County · Built 2024
    Good
  4. TH 169 over Main ST
    Sherburne County · Built 2024
    Good
  5. Mn 23 over US 10
    Benton County · Built 2024
    Good

Who owns Minnesota's bridges

County5,39739.8%
State3,78027.9%
Town / Township3,50825.9%
City7115.2%
Federal870.6%
Local350.3%
Private210.2%
Railroad100.1%
Tribal20.0%

More Minnesota facts

Total bridge length298 miles
Total deck area77,360,343 sq ft
Culverts counted as bridges6,184 (46%)
On the National Highway System1,742
Posted with load limits1,085
Closed to traffic50
Listed or eligible for the National Register142
Average daily traffic per bridge4,083 vehicles
Newest structure2025