County profile · official public datasets

Sedgwick County, KS

1,333 public highway bridges tracked in the FHWA National Bridge Inventory: 67.6% rated Good, 29.6% Fair, 2.8% Poor.

1,333
Public bridges: 67.6%
Good condition: 2.8%
Poor condition

The verdict

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

Sedgwick County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 33%
lowest Poor share in state: 2.8%
Poor-condition share: 1,333
public highway bridges: 1983
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.

Sedgwick County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Sedgwick County ranks #34 of 104 Kansas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.8%). Sedgwick County, Kansas contains 1,333 public highway bridges. Roughly 67.6% are rated “Good,” 29.6% “Fair,” and 2.8% “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

1,333

Public highway bridges in Sedgwick County

Good condition

67.6%

901 of 1,333 rated 7-9

Fair condition

29.6%

395 of 1,333 rated 5-6

Poor condition

2.8%

37 of 1,333 rated 4 or below

In-state Poor-share rank

#34 of 104

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

Condition distribution

Share of 1,333 NBI-tracked bridges by lowest applicable component rating.

Good

67.6% (901)

Fair

29.6% (395)

Poor

2.8% (37)

Sedgwick County's Poor-condition bridges carry 75,881 vehicle crossings a day

That is 0.8% of the county's reported daily bridge traffic on 2.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,051 crossings a day against 7,669 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 1,332 of 1,333 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

33.2% of Sedgwick County's bridges have passed the 50-year mark

442 of the 1,333 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 67.6% 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 14.3% of the county's Poor-condition bridge traffic

SOUTH BROADWAY over ROCK ISLAND RAILROAD, built 2013, carries 10,826 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 37-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 75,881 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

20
1910s

4
1920s

7
1930s

23
1940s

25
1950s

98
1960s

184
1970s

192
1980s

174
1990s

288
2000s

157
2010s

115
2020s

46

What this shows Construction peaked in the 1990s, when 288 of the county's bridges still in the inventory were built, which is 21.6% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1983, 11 years newer than the Kansas average of 1972.

How Sedgwick County compares with Kansas's closest counties by inventory size

The 5 Kansas counties nearest Sedgwick County in number of bridges, with their condition splits. Its 2.8% Poor share is the 4th-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1979 is in line with the group.

Showing the 5 closest of 103 Kansas counties eligible for comparison.

Bridge inventory size and condition shares for Sedgwick County and the 5 Kansas counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Sedgwick County (this page)	1,333	67.6%	29.6%	2.8%	1983
Johnson County	781	75%	23.6%	1.4%	1992
Sumner County	659	50.2%	47.2%	2.6%	1978
Butler County	591	59.2%	34.7%	6.1%	1966
McPherson County	586	66.6%	32.8%	0.7%	1979
Reno County	573	51.8%	42.1%	6.1%	1980

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

Similar inventory size

Nearest county inventories outside KS (1,333 bridges here).

Allegheny County, PA · 1,294 bridges
San Bernardino County, CA · 1,422 bridges
King County, WA · 1,238 bridges
Oklahoma County, OK · 1,216 bridges

Similar average build year

Nearest mean year-built outside KS (1983 here).

Dallas County, TX · avg 1983 · 3,230 bridges
Bexar County, TX · avg 1983 · 2,342 bridges
Will County, IL · avg 1983 · 649 bridges
Bernalillo County, NM · avg 1983 · 496 bridges

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

All 1,333 Good 901 Fair 395 Poor 37

Poor-condition bridges (37)

Sort:

Sedgwick County Bridge Snapshot

Condition distribution

Sedgwick County's Poor-condition bridges carry 75,881 vehicle crossings a day

33.2% of Sedgwick County's bridges have passed the 50-year mark

One structure carries 14.3% of the county's Poor-condition bridge traffic

How Sedgwick County compares with Kansas's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Poor-condition bridges (37)

407th W

RS 601 71st

RS 610 151st

RS 610 117th

RS 82

W 109th LOCAL RD.

RS 684 109th

RS 612 101st

215 W

Tracy St LOCAL RD.

87th

103rd (RS 602)

119th LOCAL RD.

383rd W LOCAL RD.

RS 309 Greenwich

61st N LOCAL RD.

15th Street North

37TH STREET NORTH

143rd

45TH STREET

53RD.

69th St. N.

Trails EndLOCAL RD

RS 607

RS 602 103rd

23rd S

N OLIVER ST

OLIVER

103rd (RS 602)

RS 305 N 279th

279th MINOR COL

HYDRAULIC AVENUE

SOUTH BROADWAY

143rd

RS 2206 71st S

RS 362 39th S

101st LOCAL RD.

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