Total bridges
365
Public highway bridges in Olmsted County
County profile · official public datasets
Olmsted County, MN
365 public highway bridges tracked in the FHWA National Bridge Inventory: 64.1% rated Good, 34.5% Fair, 1.4% Poor.
- 365
- Public bridges
- 64.1%
- Good condition
- 1.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Olmsted County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 10%
- lowest Poor share in state
- 1.4%
- Poor-condition share
- 365
- public highway bridges
- 1985
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Olmsted County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Olmsted County ranks #9 of 87 Minnesota counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.4%). Olmsted County, Minnesota contains 365 public highway bridges. Roughly 64.1% are rated “Good,” 34.5% “Fair,” and 1.4% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
64.1%
234 of 365 rated 7-9
Fair condition
34.5%
126 of 365 rated 5-6
Poor condition
1.4%
5 of 365 rated 4 or below
In-state Poor-share rank
#9 of 87
Among Minnesota counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 365 NBI-tracked bridges by lowest applicable component rating.
Good 64.1% (234)
Fair 34.5% (126)
Poor 1.4% (5)
Olmsted County's Poor-condition bridges carry 9,145 vehicle crossings a day
That is 0.5% of the county's reported daily bridge traffic on 1.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,829 crossings a day against 4,253 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 365 of 365 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
29.3% of Olmsted County's bridges have passed the 50-year mark
107 of the 365 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 64.1% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 39.9% of the county's Poor-condition bridge traffic
MSAS 135 over ELTON HILLS RAVINE, built 1977, carries 3,650 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 5-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 9,145 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Olmsted County's bridges were built
365 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 3
1920–1929
3 bridges
- 1930s 20
1930–1939
20 bridges
- 1940s 7
1940–1949
7 bridges
- 1950s 13
1950–1959
13 bridges
- 1960s
1960–1969
50 bridges
- 1970s
1970–1979
40 bridges
- 1980s
1980–1989
52 bridges
- 1990s
1990–1999
52 bridges
- 2000s
2000–2009
87 bridges
- 2010s 28
2010–2019
28 bridges
- 2020s 11
2020–2029
11 bridges
What this shows Construction peaked in the 2000s, when 87 of the county's bridges still in the inventory were built, which is 23.8% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1985) matches the Minnesota average (1986).
How Olmsted County compares with Minnesota's closest counties by inventory size
The 5 Minnesota counties nearest Olmsted County in number of bridges, with their condition splits. Its 1.4% Poor share is the 1st-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1984 is in line with the group.
Showing the 5 closest of 86 Minnesota counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Olmsted County (this page) | 365 | 64.1% | 34.5% | 1.4% | 1985 |
| Fillmore County | 348 | 33.3% | 63.8% | 2.9% | 1984 |
| Mower County | 343 | 44.6% | 47.2% | 8.2% | 1988 |
| Ramsey County | 341 | 35.5% | 58.1% | 6.5% | 1984 |
| Goodhue County | 333 | 50.5% | 43.5% | 6% | 1979 |
| Nobles County | 304 | 70.7% | 27.6% | 1.6% | 1983 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Olmsted County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Olmsted County, both outside Minnesota so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MN (365 bridges here).
- Sullivan County, NY · 365 bridges
- Lorain County, OH · 366 bridges
- Osage County, OK · 366 bridges
- Allen County, OH · 367 bridges
Similar average build year
Nearest mean year-built outside MN (1985 here).
- Hillsborough County, FL · avg 1985 · 840 bridges
- Lancaster County, NE · avg 1985 · 661 bridges
- Nueces County, TX · avg 1985 · 528 bridges
- Grayson County, TX · avg 1985 · 513 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (365)
T 230
FairOver: STREAM
1.6 MI N JCT CR 124 on, Olmsted, MN
Built 1952 Load: 8.2 t ADT: 80
MSAS 114
FairOver: CASCADE CREEK
0.8 MI E OF JCT TH 52, Olmsted, MN
Built 1961 Load: 18.0 t ADT: 13,000
MSAS 114
FairOver: CASCADE CREEK
0.8 MI E OF JCT TH 52, Olmsted, MN
Built 1961 Load: 18.0 t ADT: 13,000
T 89
FairOver: MILL CREEK
0.1 MI W OF JCT CR 137, Olmsted, MN
Built 1974 Load: 18.0 t ADT: 15
T 49
FairOver: DRY RUN
.4 MI N JCT TH 30 on 11, Olmsted, MN
Built 1970 Load: 19.4 t ADT: 50
MSAS 104
FairOver: ZUMBRO RIVER
0.3 MI E OF JCT TH 63, Olmsted, MN
Built 1956 Load: 20.7 t ADT: 6,900
MSAS 140
FairOver: WILLOW CREEK
0.2 MI W OF JCT US 63, Olmsted, MN
Built 2005 Load: 21.9 t ADT: 7,700
MSAS 201
FairOver: S FK ZUMBRO RIVER
0.5 MI N OF JCT TH 14, Olmsted, MN
Built 1987 Load: 22.2 t ADT: 26,000
CSAH 19
FairOver: I 90
3.0 MI E OF JCT TH 52, Olmsted, MN
Built 1969 Load: 23.0 t ADT: 280
MSAS 210
FairOver: US 52
0.4 MI S OF JCT TH 14, Olmsted, MN
Built 1969 Load: 24.0 t ADT: 16,300
CSAH 26
FairOver: S FK ZUMBRO RIVER
1.6 MI W OF JCT CSAH 3, Olmsted, MN
Built 1964 Load: 24.1 t ADT: 450
CSAH 7
FairOver: S BR N FK WHITEWATER R
0.3 MI S OF JCT CSAH 2, Olmsted, MN
Built 1938 Load: 24.2 t ADT: 205
CSAH 32
FairOver: I 90
8.9 MI E OF JCT TH 52, Olmsted, MN
Built 1969 Load: 24.5 t ADT: 145
CSAH 7
FairOver: STREAM
0.1 MI N OF JCT TH 52, Olmsted, MN
Built 1956 Load: 24.5 t ADT: 870
CSAH 3
FairOver: MID FK ZUMBRO RIVER
0.5 MI N OF JCT CSAH 5, Olmsted, MN
Built 1959 Load: 25.1 t ADT: 3,000
MSAS 105
FairOver: ZUMBRO RIVER
0.3 MI E OF JCT TH 63, Olmsted, MN
Built 1968 Load: 25.8 t ADT: 8,900
US 14
FairOver: S FK WHITEWATER RIVER
4.6 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
US 14
FairOver: S FK WHITEWATER RIVER
4.8 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
MN 30
FairOver: STREAM
0.8 MI E OF JCT CSAH 3, Olmsted, MN
Built 1936 Load: 26.1 t ADT: 1,454
US 14
FairOver: S FK WHITEWATER RIVER
3.7 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
US 14
FairOver: STREAM
3.3 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
US 14
FairOver: S FK WHITEWATER RIVER
3.2 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
US 14
FairOver: S FK WHITEWATER RIVER
2.5 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
US 14
FairOver: S FK WHITEWATER RIVER
1.8 MI E OF JCT TH 42, Olmsted, MN
Built 1930 Load: 26.1 t ADT: 3,607
US 14
FairOver: STREAM
2.1 MI W OF JCT TH 42, Olmsted, MN
Built 1929 Load: 26.1 t ADT: 4,927
MN 247
FairOver: SILVER SPRING CREEK
2.7 MI E OF JCT TH 63, Olmsted, MN
Built 1938 Load: 26.1 t ADT: 3,100
CSAH 7
FairOver: DRY RUN
0.7 MI S OF JCT CSAH 2, Olmsted, MN
Built 1938 Load: 26.1 t ADT: 205
CR 110
FairOver: DRY RUN
0.4 MI W OF JCT CR 130, Olmsted, MN
Built 1980 Load: 26.1 t ADT: 35
CSAH 7
FairOver: S FK WHITEWATER RIVER
0.1 MI S OF JCT TH 14, Olmsted, MN
Built 1940 Load: 26.6 t ADT: 1,300
T 73
FairOver: STREAM
0.9 MI W JCT CSAH 20 on, Olmsted, MN
Built 1944 Load: 26.6 t ADT: 75
M 11
FairOver: STREAM
0.2 MI W OF JCT CSAH 10, Olmsted, MN
Built 1938 Load: 26.6 t ADT: 50
MSAS 102
FairOver: CASCADE CREEK
0.3 MI W OF JCT MSAS 201, Olmsted, MN
Built 1976 Load: 27.1 t ADT: 6,600
MSAS 201
FairOver: S FK ZUMBRO RIVER
2.1 MI N OF JCT TH 14, Olmsted, MN
Built 1940 Load: 27.8 t ADT: 26,500
CSAH 3
FairOver: S BR MID FK ZUMBRO RIVER
0.1 MI W OF JCT CSAH 12, Olmsted, MN
Built 1979 Load: 27.9 t ADT: 1,450
T 292
FairOver: PLUM CREEK
0.8 MI S JCT CR 113 on, Olmsted, MN
Built 1938 Load: 27.9 t ADT: 65
CSAH 20
FairOver: N BR ROOT RIVER
0.3 MI N OF JCT CR 120, Olmsted, MN
Built 1971 Load: 28.4 t ADT: 640
CSAH 36
FairOver: MARION CREEK
0.3 MI N OF JCT TH 52, Olmsted, MN
Built 1970 Load: 28.8 t ADT: 5,200
MN 42
FairOver: I 90
6.1 MI E OF JCT TH 52, Olmsted, MN
Built 1969 Load: 28.9 t ADT: 3,527
CSAH 33
FairOver: STREAM
0.7 MI S OF JCT CSAH 14, Olmsted, MN
Built 1924 Load: 29.4 t ADT: 7,000
US 14
FairOver: STREAM
4.7 MI E OF JCT TH 63, Olmsted, MN
Built 1929 Load: 29.4 t ADT: 6,199
US 63
FairOver: STREAM
2.0 MI S OF JCT TH 247, Olmsted, MN
Built 1954 Load: 29.4 t ADT: 6,300
MN 74
FairOver: STREAM
2.1 MI W OF E JCT TH 30, Olmsted, MN
Built 1956 Load: 29.4 t ADT: 1,361
US 14
FairOver: STREAM
1.4 MI W OF JCT TH 52, Olmsted, MN
Built 1958 Load: 29.4 t ADT: 29,761
US 52
FairOver: STREAM
6.8 MI NW OF N JCT TH 14, Olmsted, MN
Built 1958 Load: 29.4 t ADT: 29,678
I 90
FairOver: STREAM
3.5 MI SW OF JCT TH 63, Olmsted, MN
Built 1961 Load: 29.4 t ADT: 11,648
I 90
FairOver: STREAM
2.0 MI SW OF JCT TH 63, Olmsted, MN
Built 1961 Load: 29.4 t ADT: 11,648
I 90
FairOver: STREAM
0.3 MI E OF JCT TH 63, Olmsted, MN
Built 1969 Load: 29.4 t ADT: 5,400
US 63
FairOver: STREAM
2.7 MI S OF JCT TH 52, Olmsted, MN
Built 1958 Load: 29.4 t ADT: 32,996
CON 1506
FairOver: BADGER RUN
AT THE JCT TH52, Olmsted, MN
Built 1969 Load: 29.4 t ADT: 4,850
I 90
FairOver: BADGER RUN
AT THE JCT TH52, Olmsted, MN
Built 1969 Load: 29.4 t ADT: 12,000
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.