Total bridges
231
Public highway bridges in Jones County
County profile · official public datasets
Jones County, IA
231 public highway bridges tracked in the FHWA National Bridge Inventory: 36.8% rated Good, 58.9% Fair, 4.3% Poor.
- 231
- Public bridges
- 36.8%
- Good condition
- 4.3%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Jones County posts a top-5% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 3%
- lowest Poor share in state
- 4.3%
- Poor-condition share
- 231
- 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.
Jones County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Jones County ranks #3 of 99 Iowa counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.3%). Jones County, Iowa contains 231 public highway bridges. Roughly 36.8% are rated “Good,” 58.9% “Fair,” and 4.3% “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
36.8%
85 of 231 rated 7-9
Fair condition
58.9%
136 of 231 rated 5-6
Poor condition
4.3%
10 of 231 rated 4 or below
In-state Poor-share rank
#3 of 99
Among Iowa counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 231 NBI-tracked bridges by lowest applicable component rating.
Good 36.8% (85)
Fair 58.9% (136)
Poor 4.3% (10)
Jones County's Poor-condition bridges carry 2,198 vehicle crossings a day
That is 1% of the county's reported daily bridge traffic on 4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 244 crossings a day against 1,338 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 227 of 231 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.3% of Jones County's bridges have passed the 50-year mark
77 of the 231 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 36.8% 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 28% of the county's Poor-condition bridge traffic
1ST ST SE over DIVISION CREEK, built 1900, carries 616 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 10-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 2,198 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Jones County's bridges were built
231 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1900s 6
1900–1909
6 bridges
- 1920s 2
1920–1929
2 bridges
- 1930s 2
1930–1939
2 bridges
- 1940s 8
1940–1949
8 bridges
- 1950s
1950–1959
20 bridges
- 1960s
1960–1969
21 bridges
- 1970s
1970–1979
44 bridges
- 1980s
1980–1989
39 bridges
- 1990s
1990–1999
27 bridges
- 2000s
2000–2009
38 bridges
- 2010s
2010–2019
18 bridges
- 2020s 5
2020–2029
5 bridges
What this shows Construction peaked in the 1970s, when 44 of the county's bridges still in the inventory were built, which is 19% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1981) matches the Iowa average (1979).
How Jones County compares with Iowa's closest counties by inventory size
The 5 Iowa counties nearest Jones County in number of bridges, with their condition splits. Its 4.3% Poor share is the 1st-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1976 is 5 years newer.
Showing the 5 closest of 98 Iowa counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Warren County | 239 | 42.7% | 36.8% | 20.5% | 1983 |
| Jones County (this page) | 231 | 36.8% | 58.9% | 4.3% | 1981 |
| Franklin County | 228 | 44.7% | 42.1% | 13.2% | 1982 |
| Madison County | 225 | 16% | 46.7% | 37.3% | 1968 |
| Mahaska County | 225 | 28.4% | 39.1% | 32.4% | 1972 |
| Sac County | 224 | 35.7% | 30.8% | 33.5% | 1973 |
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 Jones 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 Jones County, both outside Iowa so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IA (231 bridges here).
- Saline County, AR · 231 bridges
- Clay County, KS · 231 bridges
- Panola County, MS · 231 bridges
- Burke County, NC · 231 bridges
Similar average build year
Nearest mean year-built outside IA (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (136)
75TH AVE.
FairOver: SMALL CREEK
083020104, Jones, IA
Built 2006 Load: 33.7 t ADT: 62
COUNTY RD E-53
FairOver: SMALL CREEK
083023201, Jones, IA
Built 1971 Load: 34.0 t ADT: 196
170TH ST
FairOver: BRANCH KITTY CREEK
085021801, Jones, IA
Built 2001 Load: 34.0 t ADT: 41
COUNTY RD E-16
FairOver: BRANCH OF WET CREEK
086043601, Jones, IA
Built 1968 Load: 34.0 t ADT: 727
CO RD E 45
FairOver: CATFISH CREEK
083031005, Jones, IA
Built 2018 Load: 34.3 t ADT: 648
LANDIS RD.
FairOver: SMALL CREEK
084031704, Jones, IA
Built 1937 Load: 34.3 t ADT: 78
COUNTY RD X-44
FairOver: SMALL CREEK
085032202, Jones, IA
Built 2007 Load: 34.3 t ADT: 668
COUNTY RD X-31
FairOver: SAMS CREEK
085042204, Jones, IA
Built 1966 Load: 34.3 t ADT: 520
COUNTY RD D-62
FairOver: WET CREEK
086042409, Jones, IA
Built 1992 Load: 34.3 t ADT: 599
COUNTY RD E-45
FairOver: SMALL CREEK
083010707, Jones, IA
Built 1980 Load: 34.7 t ADT: 422
120TH AVE
FairOver: SMALL CREEK
083022902, Jones, IA
Built 1980 Load: 34.7 t ADT: 16
60TH AVE.
FairOver: SMALL CREEK
084011904, Jones, IA
Built 2007 Load: 34.7 t ADT: 123
MILITARY RD
FairOver: BR KITTY CREEK
086033306, Jones, IA
Built 1936 Load: 35.3 t ADT: 62
US 151 NB
FairOver: WAPSIPINICON RIVER
1.4 mi. S of Jct. IA 64, Jones, IA
Built 2002 Load: 35.6 t ADT: 7,200
MAIN ST E
FairOver: DIVISION CREEK
000000000, Jones, IA
Built 1900 Load: 36.0 t ADT: 3,776
COUNTY RD. X-28
FairOver: WAPSIPINICON RIVER
084040607, Jones, IA
Built 1971 Load: 36.0 t ADT: 550
COUNTY RD E-45
FairOver: SMALL CREEK
083011605, Jones, IA
Built 1985 Load: 36.3 t ADT: 216
IA 38
FairOver: WAPSIPINICON RIVER
0.8 mi. S of N jct SR E45, Jones, IA
Built 1977 Load: 36.6 t ADT: 1,410
IA 38
FairOver: MAQUOKETA RIVER
1.5 MI. N OF JCT. SR D62, Jones, IA
Built 1974 Load: 36.9 t ADT: 3,310
IA 64 & 136
FairOver: LITTLE BEAR CREEK
0.2 mi. E of W Jct IA 136, Jones, IA
Built 1978 Load: 37.0 t ADT: 2,470
COUNTY RD X-64
FairOver: MILL CREEK
083012813, Jones, IA
Built 1957 Load: 37.2 t ADT: 432
20TH AVE.
FairOver: BEERS CREEK
084011302, Jones, IA
Built 1970 Load: 37.3 t ADT: 34
US 151 NB
FairOver: KITTY CREEK
0.4 MI. N OF JCT. SR X44, Jones, IA
Built 2002 Load: 38.4 t ADT: 4,200
SOUTH MAIN ST
FairOver: BRANCH OF KITTY CREEK
000000000, Jones, IA
Built 1972 Load: 38.7 t ADT: 6,117
200TH AVENUE
FairOver: S FORK WALNUT CREEK
083041302, Jones, IA
Built 1970 Load: 39.2 t ADT: 47
LINN-JONES RD.
FairOver: CREEK
086041802, Jones, IA
Built 1985 Load: 39.2 t ADT: 44
IA 38
FairOver: KITTY CREEK
0.5 MI. N OF JCT. 151, Jones, IA
Built 1973 Load: 39.5 t ADT: 3,630
CHERRY GROVE RD
FairOver: WHITE OAK CREEK
083043502, Jones, IA
Built 1978 Load: 39.5 t ADT: 30
COUNTY RD E-45
FairOver: SMALL CREEK
083020805, Jones, IA
Built 1971 Load: 40.2 t ADT: 422
220TH AVE.
FairOver: WHITE OAK CREEK
083043402, Jones, IA
Built 1947 Load: 40.6 t ADT: 11
IA 38
FairOver: WALNUT CREEK
0.3 mi. S of S jct SR E45, Jones, IA
Built 1977 Load: 43.7 t ADT: 1,550
215TH ST.
FairOver: BRANCH OF SILVER CREEK
086041903, Jones, IA
Built 1940 Load: 49.3 t ADT: 15
BEAR CREEK RD.
FairOver: BEAR CREEK
084012603, Jones, IA
Built 1988 Load: 49.8 t ADT: 47
COUNTY RD X-44
FairOver: BIG BEAR CREEK
084031402, Jones, IA
Built 1978 Load: 52.5 t ADT: 619
BLUEBIRD RD
FairOver: SMALL CREEK
086013405, Jones, IA
Built 2014 Load: 57.0 t ADT: 41
BUNKER HILL RD
FairOver: BEERS CREEK
084011105, Jones, IA
Built 2015 Load: 97.2 t ADT: 11
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.