Total bridges
192
Public highway bridges in De Witt County
County profile · official public datasets
De Witt County, IL
192 public highway bridges tracked in the FHWA National Bridge Inventory: 57.3% rated Good, 37% Fair, 5.7% Poor.
- 192
- Public bridges
- 57.3%
- Good condition
- 5.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
De Witt County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 23%
- lowest Poor share in state
- 5.7%
- Poor-condition share
- 192
- public highway bridges
- 1980
- 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.
De Witt County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, De Witt County ranks #23 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.7%). De Witt County, Illinois contains 192 public highway bridges. Roughly 57.3% are rated “Good,” 37% “Fair,” and 5.7% “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
57.3%
110 of 192 rated 7-9
Fair condition
37%
71 of 192 rated 5-6
Poor condition
5.7%
11 of 192 rated 4 or below
In-state Poor-share rank
#23 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 192 NBI-tracked bridges by lowest applicable component rating.
Good 57.3% (110)
Fair 37% (71)
Poor 5.7% (11)
De Witt County's Poor-condition bridges carry 4,325 vehicle crossings a day
That is 1.3% of the county's reported daily bridge traffic on 5.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 393 crossings a day against 932 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 191 of 192 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
32.8% of De Witt County's bridges have passed the 50-year mark
63 of the 192 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 57.3% 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 64.7% of the county's Poor-condition bridge traffic
IL 54 (FAP 71) over I-74, built 1970, carries 2,800 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 11-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 4,325 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When De Witt County's bridges were built
192 bridges with a recorded construction year, grouped by decade
- 1900s 3
1900–1909
3 bridges
- 1910s 1
1910–1919
1 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 4
1950–1959
4 bridges
- 1960s 20
1960–1969
20 bridges
- 1970s
1970–1979
50 bridges
- 1980s
1980–1989
53 bridges
- 1990s
1990–1999
28 bridges
- 2000s 16
2000–2009
16 bridges
- 2010s 8
2010–2019
8 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1980s, when 53 of the county's bridges still in the inventory were built, which is 27.6% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1980) matches the Illinois average (1979).
How De Witt County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest De Witt County in number of bridges, with their condition splits. Its 5.7% Poor share is the 2nd-lowest of these 6. Its average build year of 1980 against a peer-group mean of 1980 is in line with the group.
Showing the 5 closest of 101 Illinois counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Warren County | 199 | 69.3% | 23.1% | 7.5% | 1985 |
| Crawford County | 197 | 33% | 60.9% | 6.1% | 1983 |
| Jo Daviess County | 193 | 46.1% | 44% | 9.8% | 1973 |
| Union County | 192 | 54.7% | 41.7% | 3.6% | 1981 |
| De Witt County (this page) | 192 | 57.3% | 37% | 5.7% | 1980 |
| Clinton County | 190 | 56.3% | 36.3% | 7.4% | 1976 |
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 De Witt 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 De Witt County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (192 bridges here).
- Barbour County, AL · 192 bridges
- El Dorado County, CA · 192 bridges
- Santa Cruz County, CA · 192 bridges
- Morgan County, CO · 192 bridges
Similar average build year
Nearest mean year-built outside IL (1980 here).
- Tulsa County, OK · avg 1980 · 1,135 bridges
- Miami-Dade County, FL · avg 1980 · 1,057 bridges
- Pulaski County, AR · avg 1980 · 721 bridges
- McLennan County, TX · avg 1980 · 714 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (110)
TR 45
GoodOver: TRIB SALT FORK CREEK
7.2 MI W FARMER CITY, De Witt, IL
Built 1990 Load: 32.4 t ADT: 50
TR 65
GoodOver: N FORK SALT CREEK
9 MI W FARMER CITY, De Witt, IL
Built 1991 Load: 32.4 t ADT: 75
TR 125
GoodOver: DRAINAGE DITCH
2 MI NE OF CLINTON, De Witt, IL
Built 1993 Load: 32.4 t ADT: 175
TR 125
GoodOver: TEN MILE CREEK
4 MI NE OF CLINTON, De Witt, IL
Built 1993 Load: 32.4 t ADT: 175
TR 93 B
GoodOver: TEN MILE CREEK
2.5 MI SE OF WAPELLA, De Witt, IL
Built 1999 Load: 32.4 t ADT: 50
TR 12
GoodOver: SALT CREEK
1 MI SE OF MIDLAND, De Witt, IL
Built 1993 Load: 32.4 t ADT: 75
TR 155
GoodOver: STREAM
1 MI W OF HALLSVILLE, De Witt, IL
Built 1994 Load: 32.4 t ADT: 10
FAS 547(CH 6)
GoodOver: STREAM
W EDGE WAYNESVILLE, De Witt, IL
Built 1997 Load: 32.4 t ADT: 325
TR 223
GoodOver: NORTH FORK CREEK
4 MI S OF CLINTON, De Witt, IL
Built 1995 Load: 32.4 t ADT: 150
TR 21(1500N)
GoodOver: LONG POINT TRIB
3.5 NNE WAPELLA, De Witt, IL
Built 2002 Load: 32.4 t ADT: 150
TR 21(1500N)
GoodOver: LONG POINT TRIB
3.5 NNE WAPELLA, De Witt, IL
Built 2002 Load: 32.4 t ADT: 150
TR 126
GoodOver: TRIB LONG POINT CR
3 MI NE WAPELLA, De Witt, IL
Built 1998 Load: 32.4 t ADT: 50
TR 87
GoodOver: STREAM
1 MI S FARMER CITY, De Witt, IL
Built 1996 Load: 32.4 t ADT: 75
TR 234
GoodOver: DRAINAGE DITCH
1 MI E OF WELDON, De Witt, IL
Built 1999 Load: 32.4 t ADT: 50
TR 51
GoodOver: DRAINAGE DITCH
1 MI E WAYNESVILLE, De Witt, IL
Built 2000 Load: 32.4 t ADT: 25
TR 1A/LAKE FORK RD
GoodOver: NORTH FORK
6.0 MI S. CLINTON, De Witt, IL
Built 2004 Load: 32.4 t ADT: 175
TR 55
GoodOver: TRIB LONG POINT CREE
2.3 MI NW WAPELLA, De Witt, IL
Built 2002 Load: 32.4 t ADT: 25
TR 82
GoodOver: LONG POINT CREEK
4.3 MILE NW WAPELLA, De Witt, IL
Built 2005 Load: 32.4 t ADT: 50
TR 138
GoodOver: LONG POINT CREEK
3.5 MI NE OF WAPELLA, De Witt, IL
Built 2004 Load: 32.4 t ADT: 50
TR 12
GoodOver: UNNAMED TRIB
2.8 MI NW KENNEY, De Witt, IL
Built 2007 Load: 32.4 t ADT: 75
TR 44
GoodOver: ROCK CREEK
2 MI NE WAYNESVILLE, De Witt, IL
Built 2009 Load: 32.4 t ADT: 25
TR 44
GoodOver: ROCK CREEK
3 MI E WAYNESVILLE, De Witt, IL
Built 2011 Load: 32.4 t ADT: 50
TR 63
GoodOver: Friends Crk Drainage
6.0 MI N CISCO, De Witt, IL
Built 2013 Load: 32.4 t ADT: 25
TR 122
GoodOver: Trib Long Point CR
3 miles N of Wapella, De Witt, IL
Built 2013 Load: 32.4 t ADT: 125
CH 17(FAS 483)
GoodOver: DRAINAGE DITCH
2.8MI N WAYNESVILLE, De Witt, IL
Built 1985 Load: 32.4 t ADT: 450
CH 17(FAS 483)
GoodOver: DRAINAGE DITCH
2.95MI N WAYNESVILLE, De Witt, IL
Built 1985 Load: 32.4 t ADT: 450
FAS 483(CH 17)
GoodOver: STREAM
S EDGE WAYNESVILLE, De Witt, IL
Built 1992 Load: 32.4 t ADT: 125
FAS 483(CH 17)
GoodOver: DRAINAGE DITCH
1 MI S WAYNESVILLE, De Witt, IL
Built 1993 Load: 32.4 t ADT: 125
TR 162
GoodOver: STREAM
4.5 MI NE OF MAROA, De Witt, IL
Built 1993 Load: 32.4 t ADT: 50
TR 238 A
GoodOver: DRAINAGE DITCH
6 MI NE OF WELDON, De Witt, IL
Built 1993 Load: 32.4 t ADT: 25
TR 99
GoodOver: DRAINAGE DITCH
1 MI SE FARMER CITY, De Witt, IL
Built 1999 Load: 32.4 t ADT: 50
ch 15
GoodOver: Friends Creek
3 mi SW of Weldon, De Witt, IL
Built 2013 Load: 32.4 t ADT: 225
ALLEN ST(MS 2900)
GoodOver: SALT CREEK
FARMER CITY, De Witt, IL
Built 1991 Load: 32.4 t ADT: 325
MAIN (MS 8000)
GoodOver: SALT CREEK
FARMER CITY, De Witt, IL
Built 1996 Load: 32.4 t ADT: 950
FAU 7337(MADISON S
GoodOver: COON CREEK
CITY OF CLINTON, De Witt, IL
Built 2000 Load: 32.4 t ADT: 1,300
WILLIAM ST(MS 7900
GoodOver: TRIB SALT CREEK
FARMER CITY, De Witt, IL
Built 2010 Load: 32.4 t ADT: 50
US 51 (NB)(FAP 322
GoodOver: LONG POINT CREEK
2 MI N OF WAPELLA, De Witt, IL
Built 1986 Load: 33.4 t ADT: 9,650
US 51(FAP 322)
GoodOver: STREAM
0.5 MI N OF WAPELLA, De Witt, IL
Built 1986 Load: 33.4 t ADT: 9,650
FAS 483(CH 17)
GoodOver: STREAM
5.5 MI S WAYNESVILLE, De Witt, IL
Built 1989 Load: 34.0 t ADT: 550
CH 10(FAS 543)
GoodOver: N FORK SALT CREEK
7 MI E OF WAPELLA, De Witt, IL
Built 1969 Load: 34.3 t ADT: 400
FAP 71(IL 54)
GoodOver: TRIB TO SALT CREEK
2 MI SW FARMER CITY, De Witt, IL
Built 1995 Load: 34.7 t ADT: 2,000
TR 52
GoodOver: STREAM
3.5 MI NE WAYNESVILL, De Witt, IL
Built 1983 Load: 35.0 t ADT: 50
TR 52
GoodOver: STREAM
3.7MI NE WAYNESVILLE, De Witt, IL
Built 1988 Load: 36.0 t ADT: 50
FAS 483(CH 17)
GoodOver: DRAINAGE DITCH
3.7 MI S WAYNESVILLE, De Witt, IL
Built 1900 Load: 37.6 t ADT: 250
US 51 (SB)(FAP 322
GoodOver: TEN MILE CREEK
1.5 MI S WAPELLA, De Witt, IL
Built 1979 Load: 37.9 t ADT: 10,300
US 51 (SB)(FAP 322
GoodOver: COON CREEK
.5 MI S OF CLINTON, De Witt, IL
Built 1986 Load: 39.2 t ADT: 6,950
TR 207
GoodOver: FRIENDS CREEK
1.5 MI ESE WELDON, De Witt, IL
Built 2022 Load: 39.2 t ADT: 75
US 51 BUSN(FAP 708
GoodOver: COON CREEK
0.18 M S OF CLINTON, De Witt, IL
Built 1986 Load: 39.5 t ADT: 3,500
US 51 BUSN(FAP 708
GoodOver: STREAM
1 MI N OF CLINTON, De Witt, IL
Built 1986 Load: 39.5 t ADT: 2,800
IL 54 (FAP 71)
GoodOver: COON CREEK
2 MI NE CLINTON, De Witt, IL
Built 2011 Load: 40.2 t ADT: 1,650
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.