Total bridges
193
Public highway bridges in Jo Daviess County
County profile · official public datasets
Jo Daviess County, IL
193 public highway bridges tracked in the FHWA National Bridge Inventory: 46.1% rated Good, 44% Fair, 9.8% Poor.
- 193
- Public bridges
- 46.1%
- Good condition
- 9.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Jo Daviess County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 69th
- of 102 on Poor share
- 9.8%
- Poor-condition share
- 193
- public highway bridges
- 1973
- 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.
Jo Daviess County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Jo Daviess County ranks #69 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.8%). Jo Daviess County, Illinois contains 193 public highway bridges. Roughly 46.1% are rated “Good,” 44% “Fair,” and 9.8% “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.
Good condition
46.1%
89 of 193 rated 7-9
Fair condition
44%
85 of 193 rated 5-6
Poor condition
9.8%
19 of 193 rated 4 or below
In-state Poor-share rank
#69 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 193 NBI-tracked bridges by lowest applicable component rating.
Good 46.1% (89)
Fair 44% (85)
Poor 9.8% (19)
Jo Daviess County's Poor-condition bridges carry 8,525 vehicle crossings a day
That is 5% of the county's reported daily bridge traffic on 9.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 449 crossings a day against 413 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 193 of 193 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
43% of Jo Daviess County's bridges have passed the 50-year mark
83 of the 193 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 46.1% 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 44.6% of the county's Poor-condition bridge traffic
US 20 over RUSH CREEK, built 1971, carries 3,800 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 19-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 8,525 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Jo Daviess County's bridges were built
193 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1900s 6
1900–1909
6 bridges
- 1910s 6
1910–1919
6 bridges
- 1920s 11
1920–1929
11 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s
1950–1959
18 bridges
- 1960s
1960–1969
23 bridges
- 1970s 15
1970–1979
15 bridges
- 1980s
1980–1989
41 bridges
- 1990s
1990–1999
27 bridges
- 2000s 15
2000–2009
15 bridges
- 2010s 15
2010–2019
15 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1980s, when 41 of the county's bridges still in the inventory were built, which is 21.2% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1973, 6 years older than the Illinois average of 1979.
How Jo Daviess County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest Jo Daviess County in number of bridges, with their condition splits. Its 9.8% Poor share is the 6th-lowest of these 6. Its average build year of 1973 against a peer-group mean of 1981 is 8 years older.
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 (this page) | 193 | 46.1% | 44% | 9.8% | 1973 |
| De Witt County | 192 | 57.3% | 37% | 5.7% | 1980 |
| Union County | 192 | 54.7% | 41.7% | 3.6% | 1981 |
| 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 Jo Daviess 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 Jo Daviess County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (193 bridges here).
- Cecil County, MD · 193 bridges
- Blue Earth County, MN · 193 bridges
- Jasper County, MS · 193 bridges
- Cooper County, MO · 193 bridges
Similar average build year
Nearest mean year-built outside IL (1973 here).
- Jefferson County, AL · avg 1973 · 1,068 bridges
- Erie County, NY · avg 1973 · 906 bridges
- Davidson County, TN · avg 1973 · 832 bridges
- Lancaster County, PA · avg 1973 · 801 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (85)
ELIZABETH HANOVER
FairOver: WOLF CREEK
2.5 MI N OF HANOVER, Jo Daviess, IL
Built 1901 Load: 11.0 t ADT: 150
ROBERTS RD
FairOver: CN RR
3 MI W APPLE RIVER, Jo Daviess, IL
Built 1901 Load: 11.7 t ADT: 50
TOWNSHIP RD NO 187
FairOver: HAMMOND BR PLUM RIV
4 MI SO OF STOCKTON, Jo Daviess, IL
Built 1963 Load: 12.0 t ADT: 75
NORTH MENOMINEE RO
FairOver: LITTLE MENOMINEE RIV
MENOMINEE, Jo Daviess, IL
Built 1932 Load: 13.0 t ADT: 550
FAS1067(E WILLOW R
FairOver: MUDDY PLUM RIVER
6 MI S STOCKTON, Jo Daviess, IL
Built 1950 Load: 15.2 t ADT: 125
WILLOW ROAD
FairOver: MUDDY PLUM RIVER
6 M S STOCKTON, Jo Daviess, IL
Built 1910 Load: 17.5 t ADT: 125
TOWNSHIP ROAD NO.
FairOver: WEST FORK APPLE RIV
5 M W APPLE RIVER, Jo Daviess, IL
Built 1901 Load: 17.5 t ADT: 50
KELLY RD
FairOver: E FORK GALENA RIV
2.5 MI NE GALENA, Jo Daviess, IL
Built 1901 Load: 17.5 t ADT: 25
TOWNSHIP ROAD NO 8
FairOver: FURNACECREEK
2 MI N W ELIZABETH, Jo Daviess, IL
Built 1916 Load: 17.5 t ADT: 50
TOWNSHIP RD NO 186
FairOver: BR COON CREEK
5.5 MI SO APPLE RIV, Jo Daviess, IL
Built 1915 Load: 17.5 t ADT: 25
TOWNSHIP RD NO 197
FairOver: MIDDLE FORK PLUM RIV
4 MI SO STOCKTON, Jo Daviess, IL
Built 1919 Load: 17.5 t ADT: 75
S. TOWN HALL RD
FairOver: TRIB MUDDY PLUM
6.6MI SE STOCKTON, Jo Daviess, IL
Built 1950 Load: 17.5 t ADT: 25
TOWNSHIP ROAD 290
FairOver: UNNAMED CREEK
2.5 MI N OF NORA, Jo Daviess, IL
Built 1901 Load: 20.1 t ADT: 50
S. DERINDA ROAD
FairOver: LITTLE RUSH CREEK
4 M SE ELIZABETH, Jo Daviess, IL
Built 1937 Load: 20.7 t ADT: 350
MENOMINEE STREET
FairOver: DRAINAGE DITCH
MENOMINEE AT THIRD, Jo Daviess, IL
Built 1974 Load: 21.1 t ADT: 175
TOWNSHIP RD NO 180
FairOver: SCRUB CREEK
4 MI SW PLEASANT VLY, Jo Daviess, IL
Built 1939 Load: 21.4 t ADT: 25
TOWNSHIP RD NO 244
FairOver: PLUM RIVER
4 MI S STOCKTON, Jo Daviess, IL
Built 1956 Load: 21.7 t ADT: 50
TOWNSHIP RD NO 273
FairOver: RUSH CREEK
4.5 MI SE HANOVER, Jo Daviess, IL
Built 1953 Load: 22.0 t ADT: 75
TOWNSHIP ROAD NO 9
FairOver: SMALLPOX CREEK
6 MI. E. OF GALENA, Jo Daviess, IL
Built 1960 Load: 23.0 t ADT: 50
TOWNSHIP RD NO 128
FairOver: WOLF CREEK
1 MI S OF ELIZABETH, Jo Daviess, IL
Built 1940 Load: 23.7 t ADT: 225
ILL 78
FairOver: YELLOW CREEK
1.6 MI. N. OF US 20, Jo Daviess, IL
Built 1988 Load: 24.0 t ADT: 1,400
SO.ELMOVILLE ROAD
FairOver: N FORK PLUM RIVER
6 MILES S STOCKTON, Jo Daviess, IL
Built 1934 Load: 24.3 t ADT: 50
GROEZINGER ROAD
FairOver: PLUM RIVER
5 MI S STOCKTON, Jo Daviess, IL
Built 1927 Load: 24.3 t ADT: 75
TOWNSHIP ROAD NO.
FairOver: MENOMINEE RIVER
3M NW OF MENOMINEE, Jo Daviess, IL
Built 1925 Load: 24.3 t ADT: 50
TOWNSHIP ROAD NO.
FairOver: IRISH HOLLOW CREEK
5 MI W ELIZABETH, Jo Daviess, IL
Built 1922 Load: 24.3 t ADT: 75
TOWNSHIP ROAD NO 8
FairOver: SNIPE HOLLOW BR
2 MI NW ELIZABETH, Jo Daviess, IL
Built 1920 Load: 24.3 t ADT: 350
TOWNSHIP ROAD NO 1
FairOver: SNIPE HOLLOW BRANCH
2.5 MI NW ELIZABETH, Jo Daviess, IL
Built 1921 Load: 24.3 t ADT: 75
TOWNSHIP RD NO 216
FairOver: PLUM RIVER
2 M NW PLEASANT VLY, Jo Daviess, IL
Built 1926 Load: 24.3 t ADT: 100
TOWNSHIP RD NO 229
FairOver: DAVIS CREEK
3 MI NE PLEASANT VLY, Jo Daviess, IL
Built 1910 Load: 24.3 t ADT: 50
CO HWY NO 11
FairOver: BR EAST PLUM RIVER
5 MI E PLEASANT VALL, Jo Daviess, IL
Built 1950 Load: 24.3 t ADT: 100
CH 15
FairOver: BR OF HELLS BR
5 MI N WOODBINE, Jo Daviess, IL
Built 1953 Load: 24.3 t ADT: 250
CH 17
FairOver: BR LITTLE RUSH CR
3 MI E HANOVER, Jo Daviess, IL
Built 1933 Load: 24.3 t ADT: 100
E CENTER ROAD
FairOver: LAWHORN CREEK
2 MI. SW STOCKTON, Jo Daviess, IL
Built 1954 Load: 24.6 t ADT: 275
E SCHAPVILLE RD
FairOver: HELLS BRANCH APPLE R
1.5MI E SCHAPVILLE, Jo Daviess, IL
Built 1954 Load: 24.6 t ADT: 250
TOWNSHIP ROAD NO.
FairOver: SINSINAWA RIVER
3 M E MENOMINEE, Jo Daviess, IL
Built 1964 Load: 24.6 t ADT: 700
TOWNSHIP ROAD NO.
FairOver: L. MENOMINEE RIV
1 MI NE MENOMINEE, Jo Daviess, IL
Built 1964 Load: 25.9 t ADT: 100
TOWNSHIP RD NO 227
FairOver: RUSH CREEK
2 MI W MASSBACH, Jo Daviess, IL
Built 1969 Load: 26.2 t ADT: 75
TOWNSHIP RD NO 144
FairOver: LITTLE RUSH CREEK
4 MI. E. OF HANOVER, Jo Daviess, IL
Built 1964 Load: 27.2 t ADT: 50
TOWNSHIP ROAD NO 3
FairOver: CLEAR CREEK
3 MILES SW WARREN, Jo Daviess, IL
Built 1969 Load: 27.5 t ADT: 50
TOWNSHIP ROAD NO 1
FairOver: HELLS BRANCH CREEK
6 MI SW APPLE RIVER, Jo Daviess, IL
Built 1971 Load: 27.5 t ADT: 225
TOWNSHIP RD NO 288
FairOver: YELLOW CREEK
6 MI SO OF NORA, Jo Daviess, IL
Built 1958 Load: 27.5 t ADT: 100
TOWNSHIP RD NO 180
FairOver: BR OF CAMP CREEK
1 MI SE MASSBACH, Jo Daviess, IL
Built 1921 Load: 27.9 t ADT: 25
TOWNSHIP RD NO 197
FairOver: PLUM RIVER
4.5 MI SO STOCKTON, Jo Daviess, IL
Built 1925 Load: 27.9 t ADT: 50
TOWNSHIP ROAD NO.
FairOver: SMALLPOX CREEK
3 MILES SE GALENA, Jo Daviess, IL
Built 1963 Load: 28.8 t ADT: 100
TOWNSHIP RD NO 146
FairOver: BR OF APPLE RIVER
2 MI NO OF ELIZABETH, Jo Daviess, IL
Built 1967 Load: 29.2 t ADT: 100
TOWNSHIP RD NO 258
FairOver: DAVIS CREEK
3 MI E PLEASANT VLY, Jo Daviess, IL
Built 1968 Load: 29.2 t ADT: 25
SOUTH BLACKJACK RO
FairOver: SMALLPOX CREEK
3 MILES SOUTH GALENA, Jo Daviess, IL
Built 1959 Load: 30.5 t ADT: 475
TOWNSHIP ROAD NO 3
FairOver: SMALLPOX CREEK
3 MI S.E. OF GALENA, Jo Daviess, IL
Built 1963 Load: 31.1 t ADT: 250
US 20
FairOver: MISS RIVER HWY RR
IN DUBUQUE, Jo Daviess, IL
Built 1943 Load: 32.4 t ADT: 17,300
IRISH HOLLOW RD/TR
FairOver: IRISH HOLLOW CREEK
6 MI. W. ELIZABETH, Jo Daviess, IL
Built 1996 Load: 32.4 t ADT: 75
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.