County profile · official public datasets

Schuyler County, IL

114 public highway bridges tracked in the FHWA National Bridge Inventory: 21.1% rated Good, 68.4% Fair, 10.5% Poor.

114
Public bridges: 21.1%
Good condition: 10.5%
Poor condition

The verdict

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

Schuyler County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

77th
of 102 on Poor share: 10.5%
Poor-condition share: 114
public highway bridges: 1981
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.

Schuyler County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Schuyler County ranks #77 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.5%). Schuyler County, Illinois contains 114 public highway bridges. Roughly 21.1% are rated “Good,” 68.4% “Fair,” and 10.5% “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

114

Public highway bridges in Schuyler County

Good condition

21.1%

24 of 114 rated 7-9

Fair condition

68.4%

78 of 114 rated 5-6

Poor condition

10.5%

12 of 114 rated 4 or below

In-state Poor-share rank

#77 of 102

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

Condition distribution

Share of 114 NBI-tracked bridges by lowest applicable component rating.

Good

21.1% (24)

Fair

68.4% (78)

Poor

10.5% (12)

Schuyler County's Poor-condition bridges carry 1,825 vehicle crossings a day

That is 4.4% of the county's reported daily bridge traffic on 10.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 152 crossings a day against 558 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 114 of 114 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

23.7% of Schuyler County's bridges have passed the 50-year mark

27 of the 114 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 21.1% 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 68.5% of the county's Poor-condition bridge traffic

IL 103 over TOWN BRANCH, built 1929, carries 1,250 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 12-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1,825 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

4
1910s

1
1920s

7
1930s

5
1950s

3
1960s

4
1970s

8
1980s

31
1990s

24
2000s

16
2010s

8
2020s

3

What this shows Construction peaked in the 1980s, when 31 of the county's bridges still in the inventory were built, which is 27.2% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1981) matches the Illinois average (1979).

How Schuyler County compares with Illinois's closest counties by inventory size

The 5 Illinois counties nearest Schuyler County in number of bridges, with their condition splits. Its 10.5% Poor share is the 6th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1982 is in line with the group.

Showing the 5 closest of 101 Illinois counties eligible for comparison.

Bridge inventory size and condition shares for Schuyler County and the 5 Illinois counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Johnson County	118	58.5%	39%	2.5%	1979
Schuyler County (this page)	114	21.1%	68.4%	10.5%	1981
Jersey County	113	57.5%	38.1%	4.4%	1981
Boone County	109	56%	37.6%	6.4%	1986
Pulaski County	108	35.2%	56.5%	8.3%	1981
Scott County	99	54.5%	38.4%	7.1%	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 Schuyler 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 Schuyler County, both outside Illinois so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IL (114 bridges here).

Calhoun County, AR · 114 bridges
Brown County, IN · 114 bridges
Morgan County, KY · 114 bridges
Dallas County, MO · 114 bridges

Similar average build year

Nearest mean year-built outside IL (1981 here).

Franklin County, OH · avg 1981 · 922 bridges
Greenville County, SC · avg 1981 · 635 bridges
Montgomery County, OH · avg 1981 · 632 bridges
Shawnee County, KS · avg 1981 · 563 bridges

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

All 114 Good 24 Fair 78 Poor 12

Fair-condition bridges (78)

Sort:

Schuyler County Bridge Snapshot

Condition distribution

Schuyler County's Poor-condition bridges carry 1,825 vehicle crossings a day

23.7% of Schuyler County's bridges have passed the 50-year mark

One structure carries 68.5% of the county's Poor-condition bridge traffic

How Schuyler County compares with Illinois's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Fair-condition bridges (78)

TR 87

FAS 583

US 24

IL 99

FAS 1581

TR 295

TR 275

TR 238

TR 262

TR 293

TR 274

TR 53

TR 68

TR 38

TR-19

TR 132

TR 94

TR 130

TR 112

TR-69

TR 175

TR 175

TR 346

TR-165

TR 148

TR 136

TR 40

TR 14

TR 60

TR 2

TR 185

TR 34

TR 11

TR-182

TR 61

TR 308

TR 61

TR 83A

TR 105

TR 37

TR 302

TR 234

TR 245

TR 160

TR 158

IL 101

TR 285

TR 167

IL 99

TR 302

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