County profile · official public datasets

Swift County, MN

97 public highway bridges tracked in the FHWA National Bridge Inventory: 75.3% rated Good, 23.7% Fair, 1% Poor.

97
Public bridges
75.3%
Good condition
1%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Swift County pairs a top-10% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 8%
lowest Poor share in state
1%
Poor-condition share
97
public highway bridges
1993
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.

Swift County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Swift County ranks #7 of 87 Minnesota counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1%). Swift County, Minnesota contains 97 public highway bridges. Roughly 75.3% are rated “Good,” 23.7% “Fair,” and 1% “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.

Total bridges

97

Public highway bridges in Swift County

Good condition

75.3%

73 of 97 rated 7-9

Fair condition

23.7%

23 of 97 rated 5-6

Poor condition

1%

1 of 97 rated 4 or below

In-state Poor-share rank

#7 of 87

Among Minnesota counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 97 NBI-tracked bridges by lowest applicable component rating.

Good
75.3% (73)
Fair
23.7% (23)
Poor
1% (1)

Swift County's Poor-condition bridges carry 1 vehicle crossings a day

That is 0% of the county's reported daily bridge traffic on 1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1 crossings a day against 395 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 97 of 97 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

10.3% of Swift County's bridges have passed the 50-year mark

10 of the 97 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 75.3% 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 100% of the county's Poor-condition bridge traffic

T 312 over SHAKOPEE CREEK, built 1924, carries 1 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 1-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Swift County's bridges were built

97 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 23 of the county's bridges still in the inventory were built, which is 23.7% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1993, 7 years newer than the Minnesota average of 1986.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Swift County compares with Minnesota's closest counties by inventory size

The 5 Minnesota counties nearest Swift County in number of bridges, with their condition splits. Its 1% Poor share is the 2nd-lowest of these 6. Its average build year of 1993 against a peer-group mean of 1987 is 6 years newer.

Showing the 5 closest of 86 Minnesota counties eligible for comparison.

Bridge inventory size and condition shares for Swift County and the 5 Minnesota counties closest to it in inventory size
County Bridges Poor
Sibley County 102 1%
Beltrami County 101 3%
Koochiching County 98 7.1%
Swift County (this page) 97 1%
Aitkin County 96 8.3%
Kandiyohi County 94 7.4%

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 Swift 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 Swift County, both outside Minnesota so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside MN (97 bridges here).

Similar average build year

Nearest mean year-built outside MN (1993 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 97 Good 73 Fair 23 Poor 1

Good-condition bridges (73)

CSAH 33

Good

Over: MUD CREEK

1.7 MI NE OF JCT TH 12, Swift, MN

Built 2009 Load: 40.8 t ADT: 690

CSAH 28

Good

Over: E BR CHIPPEWA RIVER

0.5 MI E OF JCT CSAH 31, Swift, MN

Built 2010 Load: 40.8 t ADT: 130

T 278

Good

Over: E BR CHIPPEWA RIVER

0.6 MI NW OF JCT CSAH 26, Swift, MN

Built 1992 Load: 40.8 t ADT: 40

T 34

Good

Over: JUD DITCH # 9

1.9 MI E OF JCT CSAH 13, Swift, MN

Built 1994 Load: 40.8 t ADT: 25

T 22

Good

Over: E BR CHIPPEWA RIVER

0.2 MI E OF JCT CSAH 31, Swift, MN

Built 1991 Load: 40.8 t ADT: 15

T 250

Good

Over: POMME DE TERRE RIVER

0.5 MI N OF JCT TH 12, Swift, MN

Built 1996 Load: 41.5 t ADT: 35

CSAH 22

Good

Over: JUD DITCH #4

0.6 MI W OF JCT CSAH 21, Swift, MN

Built 2000 Load: 42.0 t ADT: 365

US 12

Good

Over: POMME DE TERRE RIVER

3.3 MI W OF JCT TH 59, Swift, MN

Built 1997 Load: 43.1 t ADT: 1,036

CR 83

Good

Over: SHAKOPEE CREEK

1.5 MI S OF JCT CSAH 6, Swift, MN

Built 1996 Load: 43.3 t ADT: 35

T 82

Good

Over: MUD CREEK (JD # 19)

0.6 MI E OF JCT TH 12, Swift, MN

Built 1997 Load: 43.3 t ADT: 45

CSAH 31

Good

Over: MUD CREEK

0.1 MI N OF JCT TH 12, Swift, MN

Built 2004 Load: 43.3 t ADT: 590

MN 7

Good

Over: POMME DE TERRE RIVER

0.4 MI S OF N JCT TH 59, Swift, MN

Built 1995 Load: 44.1 t ADT: 3,800

T 55

Good

Over: MUD CREEK

1.1 MI E OF JCT CSAH 25, Swift, MN

Built 1993 Load: 44.9 t ADT: 80

CSAH 29

Good

Over: E Br Chippewa River

1.3 mi N of jct TH 9, Swift, MN

Built 2002 Load: 46.3 t ADT: 65

CR 78

Good

Over: E BR CHIPPEWA RIVER-JD#1

1.6 MI N OF JCT CSAH 104, Swift, MN

Built 1995 Load: 46.9 t ADT: 350

CSAH 17

Good

Over: CHIPPEWA RIVER

0.9 MI S OF JCT CSAH2, Swift, MN

Built 2014 Load: 47.6 t ADT: 310

CSAH 36

Good

Over: Pomme De Terre River

1.5 MI W OF JCT TH 59, Swift, MN

Built 2001 Load: 48.3 t ADT: 55

T 221

Good

Over: CHIPPEWA RIVER

0.6 MI S OF JCT CR 62, Swift, MN

Built 2009 Load: 48.6 t ADT: 60

T 25

Good

Over: POMME DE TERRE RIVER

1.1 MI S JCT CSAH 20, Swift, MN

Built 2008 Load: 50.4 t ADT: 20

T 182

Good

Over: DITCH

1.2 MI N JCT CSAH 6, Swift, MN

Built 2006 Load: 53.2 t ADT: 34

T 120

Good

Over: Shakopee Creek

0.4 mi E of jct CR 83, Swift, MN

Built 2002 Load: 55.8 t ADT: 20

T 185

Good

Over: SHAKOPEE CREEK

0.6 MI N OF JCT CSAH 27, Swift, MN

Built 1999 Load: 56.0 t ADT: 37

T 99

Good

Over: CHIPPEWA RIVER

0.1 MI W OF JCT CSAH 19, Swift, MN

Built 2005 Load: 58.4 t ADT: 53

Read our methodology - how this data is sourced, computed, and verified.

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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.