Total bridges
113
Public highway bridges in Jersey County
County profile · official public datasets
Jersey County, IL
113 public highway bridges tracked in the FHWA National Bridge Inventory: 57.5% rated Good, 38.1% Fair, 4.4% Poor.
- 113
- Public bridges
- 57.5%
- Good condition
- 4.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Jersey County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 11%
- lowest Poor share in state
- 4.4%
- Poor-condition share
- 113
- 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.
Jersey County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Jersey County ranks #11 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.4%). Jersey County, Illinois contains 113 public highway bridges. Roughly 57.5% are rated “Good,” 38.1% “Fair,” and 4.4% “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
57.5%
65 of 113 rated 7-9
Fair condition
38.1%
43 of 113 rated 5-6
Poor condition
4.4%
5 of 113 rated 4 or below
In-state Poor-share rank
#11 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 113 NBI-tracked bridges by lowest applicable component rating.
Good 57.5% (65)
Fair 38.1% (43)
Poor 4.4% (5)
Jersey County's Poor-condition bridges carry 1,750 vehicle crossings a day
That is 1.6% of the county's reported daily bridge traffic on 4.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 350 crossings a day against 917 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 113 of 113 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
27.4% of Jersey County's bridges have passed the 50-year mark
31 of the 113 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 57.5% 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 44.3% of the county's Poor-condition bridge traffic
ILL 100 over DRAINS TO EAGLE LAKE, built 1938, carries 775 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 1,750 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Jersey County's bridges were built
113 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1920s 7
1920–1929
7 bridges
- 1930s 8
1930–1939
8 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 4
1950–1959
4 bridges
- 1960s 8
1960–1969
8 bridges
- 1970s
1970–1979
15 bridges
- 1980s
1980–1989
21 bridges
- 1990s
1990–1999
19 bridges
- 2000s
2000–2009
17 bridges
- 2010s
2010–2019
10 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1980s, when 21 of the county's bridges still in the inventory were built, which is 18.6% 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 Jersey County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest Jersey County in number of bridges, with their condition splits. Its 4.4% Poor share is the 2nd-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.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Johnson County | 118 | 58.5% | 39% | 2.5% | 1979 |
| Schuyler County | 114 | 21.1% | 68.4% | 10.5% | 1981 |
| Jersey County (this page) | 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 Jersey 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 Jersey County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (113 bridges here).
- Lake County, FL · 113 bridges
- Chattooga County, GA · 113 bridges
- Tipton County, IN · 113 bridges
- Powell County, MT · 113 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 bridges (113)
TR 119
GoodOver: OTTER CREEK
1.8 MI NE OTTERVILLE, Jersey, IL
Built 1993 Load: 32.4 t ADT: 100
TR 90
GoodOver: BRANCH OF COON CREEK
1.5MI SE OF ROSEDALE, Jersey, IL
Built 1989 Load: 32.4 t ADT: 50
OAK REST ROAD
GoodOver: PIASA CREEK
1.3 MI. S. ILL 16, Jersey, IL
Built 1994 Load: 32.4 t ADT: 175
TR 9
GoodOver: TRIB ELM BRANCH
1/2 MIS W. KEMPER, Jersey, IL
Built 1997 Load: 32.4 t ADT: 50
TR 51
GoodOver: DEARCY BR.
0.8 M N. JERSEYVILLE, Jersey, IL
Built 1994 Load: 32.4 t ADT: 50
CH 26
GoodOver: TRIB OTTER CREEK
0.3 M W. ILL RT 109, Jersey, IL
Built 1995 Load: 32.4 t ADT: 650
GRANGE HALL RD/CH4
GoodOver: PIASA CREEK
3.9MI S ILL 16, Jersey, IL
Built 1996 Load: 32.4 t ADT: 550
TR 105
GoodOver: BRANCH PIASA CK
2 MI. SOUTH IL 16, Jersey, IL
Built 1996 Load: 32.4 t ADT: 375
TR 98
GoodOver: S. FORK OTTER CREEK
1.5 M W OTTERVILLE, Jersey, IL
Built 2000 Load: 32.4 t ADT: 100
TR 105
GoodOver: PIASA CREEK
3.2MI NW OF BRIGHTON, Jersey, IL
Built 1998 Load: 32.4 t ADT: 200
COUNTY LINE RD
GoodOver: CREEK
2MI SO. OF BRIGHTON, Jersey, IL
Built 1999 Load: 32.4 t ADT: 50
TR 5
GoodOver: ELM BRANCH
2 MILES W. KEMPER, Jersey, IL
Built 1999 Load: 32.4 t ADT: 50
TR 77
GoodOver: STREAM
.7 MI NE OF NUTWOOD, Jersey, IL
Built 2000 Load: 32.4 t ADT: 75
TR 69
GoodOver: PHILS CREEK
1.5MI N IL RT. 16, Jersey, IL
Built 2003 Load: 32.4 t ADT: 50
PUMP STATION ROAD
GoodOver: TRIB TO OTTER CREEK
3 M NW OF OTTERVILLE, Jersey, IL
Built 1999 Load: 32.4 t ADT: 175
CH21/OWL BRANCH RD
GoodOver: OWL BRANCH
.1 MI W FAS 745, Jersey, IL
Built 2003 Load: 32.4 t ADT: 200
TR 147
GoodOver: STREAM
1.8 MI W DELHI, Jersey, IL
Built 2004 Load: 32.4 t ADT: 50
TR 142
GoodOver: TRIB LITTLE PIASA CK
0.1MI W OF IL 109, Jersey, IL
Built 2007 Load: 32.4 t ADT: 25
TR 43
GoodOver: DRAINAGE DITCH
2 M NW NUTWOOD, Jersey, IL
Built 2006 Load: 32.4 t ADT: 10
TR 137
GoodOver: PIASA CREEK
0.8MI W BRIGHTON, Jersey, IL
Built 2007 Load: 32.4 t ADT: 175
TR 140
GoodOver: BR LITTLE PIASA CR
0.2MI E IL 109, Jersey, IL
Built 2007 Load: 32.4 t ADT: 175
TR 48
GoodOver: OWL BRANCH CREEK
3MI NE JERSEYVILLE, Jersey, IL
Built 2007 Load: 32.4 t ADT: 25
TR 108
GoodOver: TRIB SOUTH OTTER CR
2MI NW OTTERVILLE, Jersey, IL
Built 2007 Load: 32.4 t ADT: 75
TR 50
GoodOver: TRIB PHILS CK
3.5 MI N/W FIDELITY, Jersey, IL
Built 2009 Load: 32.4 t ADT: 75
TR 77
GoodOver: STREAM
1.5MI N/E NUTWOOD, Jersey, IL
Built 2009 Load: 32.4 t ADT: 75
TR 81
GoodOver: STREAM
.22 MI E FAS 774, Jersey, IL
Built 2010 Load: 32.4 t ADT: 100
CH 3
GoodOver: Trib to Macoupin Crk
1.2MI N FIDELITY, Jersey, IL
Built 2009 Load: 32.4 t ADT: 300
MCCLUSKY RD FAS 74
GoodOver: TRIB OF LITTLE PIASA
1 MI W OF DELHI, Jersey, IL
Built 2008 Load: 32.4 t ADT: 800
TR 136
GoodOver: TRIB TO PIASA CREEK
3 M E DOW, Jersey, IL
Built 2011 Load: 32.4 t ADT: 75
TR 75
GoodOver: DRAINAGE DITCH
0.5 M W NUTWOOD, Jersey, IL
Built 2011 Load: 32.4 t ADT: 25
TR 179
GoodOver: Little Piasa Creek
3 mi SW Brighton, Jersey, IL
Built 2013 Load: 32.4 t ADT: 400
TR 147
GoodOver: Unnamed Creek
1.8 Mi W of Delhi, Jersey, IL
Built 2016 Load: 32.4 t ADT: 100
TR-61
GoodOver: Phils Creek
4.75 Mi NE Jerseyvil, Jersey, IL
Built 2018 Load: 32.4 t ADT: 250
TR 17
GoodOver: Trib to Macoupin Ck
2.8 Mi S of Kemper, Jersey, IL
Built 2019 Load: 32.4 t ADT: 150
TR 8
GoodOver: TRIB MACOUPIN CREEK
3M SW KEMPER, Jersey, IL
Built 1981 Load: 32.4 t ADT: 25
FAS 746
GoodOver: PHILS CREEK
4M NE JERSEYVILLE, Jersey, IL
Built 1982 Load: 32.4 t ADT: 250
TR 8
GoodOver: TRIB. OF MACOUPIN CK
2.8 M W KEMPER, Jersey, IL
Built 1984 Load: 32.4 t ADT: 25
GRANGE HALL RD/CH
GoodOver: PIASA CREEK
0.7 MI S ILL 16, Jersey, IL
Built 1983 Load: 32.4 t ADT: 400
TR 160
GoodOver: LITTLE PIASA CREEK
0.6 M NW BRIGHTON, Jersey, IL
Built 1983 Load: 32.4 t ADT: 475
REDDISH FORD/CH 10
GoodOver: BOYER CREEK
4.1 MI N ILL 16, Jersey, IL
Built 1986 Load: 32.4 t ADT: 200
TR 50
GoodOver: PHILS CREEK
3.6 M W FIDELITY, Jersey, IL
Built 1984 Load: 32.4 t ADT: 50
MAPLE ST/CH23
GoodOver: ASKEW CREEK
FLSAH .02MI E MILLST, Jersey, IL
Built 1981 Load: 32.4 t ADT: 475
ILL 16
GoodOver: PHILS CREEK
7.0 M W JCT ILL 111, Jersey, IL
Built 1978 Load: 33.4 t ADT: 3,100
Fairground Rd /CH
GoodOver: Boyer Creek
4.3 Mi N of IL 16, Jersey, IL
Built 2021 Load: 35.0 t ADT: 200
ILL 100
GoodOver: OTTER CREEK
2.3 M S JCT ILL 16, Jersey, IL
Built 1938 Load: 36.0 t ADT: 950
IL 109
GoodOver: OTTER CREEK
2MI S OF JERSEYVILLE, Jersey, IL
Built 2004 Load: 36.6 t ADT: 3,700
FAS 748
GoodOver: LITTLE PIASA CREEK
2.2 MI W ILL 67, Jersey, IL
Built 1901 Load: 37.6 t ADT: 475
ILL 16 & 100
GoodOver: SHAW HOLLOW
2 M W ILL 100, Jersey, IL
Built 1965 Load: 38.2 t ADT: 2,550
PUMP STATION RD/CH
GoodOver: OTTER CREEK
0.5 MI W FAS 749, Jersey, IL
Built 1935 Load: 39.2 t ADT: 175
ILL 16
GoodOver: PHILS CREEK E BR
5.6 M W JCT ILL 111, Jersey, IL
Built 1978 Load: 39.5 t ADT: 2,550
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.