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.
All bridges (231)
140TH AVE
GoodOver: SMALL CREEK
085030204, Jones, IA
Built 1987 Load: 29.8 t ADT: 25
32ND ST.
GoodOver: SIBLES CREEK
083032405, Jones, IA
Built 1982 Load: 30.2 t ADT: 98
COUNTY RD E-34
GoodOver: WAPSIPINICON RIVER
084041004, Jones, IA
Built 1994 Load: 30.5 t ADT: 3,896
EBYS MILL RD
GoodOver: MAQUOKETA RIVER
085020307, Jones, IA
Built 2009 Load: 31.5 t ADT: 44
88TH AVE
GoodOver: MINERAL CREEK
085022604, Jones, IA
Built 1995 Load: 32.7 t ADT: 16
US 151
GoodOver: UNNAMED CREEK
2.0 mi. S of Jct. SR X44, Jones, IA
Built 2001 Load: 32.7 t ADT: 12,200
FOREST CHAPEL
GoodOver: DUTCH CREEK
084041516, Jones, IA
Built 1995 Load: 33.0 t ADT: 304
US 151 NB
GoodOver: IOWA 38
At the Jct. Iowa 38, Jones, IA
Built 2002 Load: 33.7 t ADT: 4,000
MADISON RD
GoodOver: BARTO CREEK
084022001, Jones, IA
Built 2021 Load: 34.7 t ADT: 26
SHAW RD
GoodOver: DIVISION CREEK
084041104, Jones, IA
Built 2020 Load: 34.7 t ADT: 671
US 151 NB
GoodOver: W BRANCH OF KITTY CREEK
0.5 MI. S OF JCT. IA 38, Jones, IA
Built 2003 Load: 35.2 t ADT: 4,400
US 151 SB
GoodOver: IA 1
At Jct. of IA #1, Jones, IA
Built 2001 Load: 35.5 t ADT: 5,200
2ND ST S E
GoodOver: DIVISION CREEK
000000000, Jones, IA
Built 1988 Load: 36.0 t ADT: 501
SYCAMORE ST
GoodOver: DIVISION CREEK
000000000, Jones, IA
Built 2007 Load: 36.0 t ADT: 1,011
IA 64
GoodOver: DRAINAGE DITCH
1.4 MI. W OF JCT. IA 136, Jones, IA
Built 1979 Load: 36.0 t ADT: 1,720
CENTRAL PARK RD
GoodOver: MINERAL CREEK
084020606, Jones, IA
Built 2015 Load: 36.0 t ADT: 90
NEWPORT RD
GoodOver: CATFISH CREEK
083031204, Jones, IA
Built 2015 Load: 36.3 t ADT: 206
HARD SCRABBLE
GoodOver: SILVER CREEK
086041204, Jones, IA
Built 1992 Load: 36.3 t ADT: 39
TEMPLE HILL RD
GoodOver: S FORK MAQUOKETA RIVER
085010808, Jones, IA
Built 1991 Load: 36.6 t ADT: 25
US 151 SB
GoodOver: IOWA 38
At the Jct. Iowa #38, Jones, IA
Built 2002 Load: 36.9 t ADT: 4,000
IA 64
GoodOver: DRAINAGE DITCH
0.7 mi. E of Jct. US 151, Jones, IA
Built 1979 Load: 37.0 t ADT: 2,790
US 151 NB
GoodOver: AMBER RD
At Jct. SR X44, Jones, IA
Built 2001 Load: 37.2 t ADT: 4,100
US 151 SB
GoodOver: AMBER RD
At Jct. SR X44, Jones, IA
Built 2001 Load: 37.2 t ADT: 4,100
COUNTY RD. X-75
GoodOver: WAPSIPINICON RIVER
083011806, Jones, IA
Built 1985 Load: 37.3 t ADT: 226
IA 136
GoodOver: BEAR CREEK
0.4 mi. S of Jct. IA 64, Jones, IA
Built 1983 Load: 37.5 t ADT: 670
IA 64
GoodOver: DRAINAGE DITCH
2.8 MI. E OF U.S. 151, Jones, IA
Built 1979 Load: 37.9 t ADT: 2,760
158TH ST.
GoodOver: HELMER CREEK
085042003, Jones, IA
Built 1988 Load: 37.9 t ADT: 49
COUNTY RD X-31
GoodOver: SILVER CREEK
086041602, Jones, IA
Built 2010 Load: 37.9 t ADT: 383
35TH ST
GoodOver: WALNUT CREEK
083032203, Jones, IA
Built 2005 Load: 38.5 t ADT: 44
60TH AVE
GoodOver: MILL CREEK
083013204, Jones, IA
Built 1981 Load: 38.9 t ADT: 34
98TH ST
GoodOver: LITTLE BEAR CREEK
084022403, Jones, IA
Built 2012 Load: 38.9 t ADT: 21
BUFFALO ROAD
GoodOver: DRAINAGE
084040303, Jones, IA
Built 2022 Load: 38.9 t ADT: 442
105TH AVE
GoodOver: MINERAL CREEK
085023304, Jones, IA
Built 2017 Load: 38.9 t ADT: 20
COUNTY RD E-28
GoodOver: BUFFALO CREEK
084040307, Jones, IA
Built 1995 Load: 39.9 t ADT: 1,237
IA 136
GoodOver: STREAM
1.1 Mi South of S.R. X-64, Jones, IA
Built 2016 Load: 40.2 t ADT: 750
140TH AVE
GoodOver: BEAR CREEK
084032402, Jones, IA
Built 2019 Load: 40.2 t ADT: 91
COUNTY RD X-44
GoodOver: KITTY CREEK
085030302, Jones, IA
Built 2010 Load: 40.2 t ADT: 1,009
E 1ST ST
GoodOver: KITTY CREEK
000000000, Jones, IA
Built 2017 Load: 40.2 t ADT: 529
COUNTY RD. D-61
GoodOver: WHITE WATER
086011102, Jones, IA
Built 2005 Load: 40.3 t ADT: 579
US 151 NB
GoodOver: IA 64
At Jct. IA 64, Jones, IA
Built 2001 Load: 40.4 t ADT: 4,850
US 151 SB
GoodOver: IA 64
At Jct. IA 64, Jones, IA
Built 2001 Load: 40.4 t ADT: 5,900
US 151 NB
GoodOver: MAQUOKETA RIVER
1.1 MI. N OF JCT. IA 38, Jones, IA
Built 2003 Load: 40.6 t ADT: 4,400
US 151 SB
GoodOver: MAQUOKETA RIVER
1.1 MI. N OF JCT. IA 38, Jones, IA
Built 2003 Load: 40.6 t ADT: 4,400
US 151 SB
GoodOver: KITTY CREEK
0.4 MI. N OF JCT. SR X44, Jones, IA
Built 2002 Load: 40.6 t ADT: 4,200
80TH ST.
GoodOver: SMALL CREEK
084032809, Jones, IA
Built 2011 Load: 41.1 t ADT: 59
100TH AVE
GoodOver: BEAR CREEK
084022704, Jones, IA
Built 2008 Load: 41.5 t ADT: 128
NB US 151
GoodOver: IA 1
At Jct. of IA 1, Jones, IA
Built 2001 Load: 41.6 t ADT: 5,200
US 151 SB
GoodOver: W BRANCH OF KITTY CREEK
0.5 MI. S OF JCT. IA 38, Jones, IA
Built 2003 Load: 41.9 t ADT: 4,400
SHAW RD
GoodOver: FAWN CREEK
084041104, Jones, IA
Built 2020 Load: 42.1 t ADT: 671
42ND ST
GoodOver: SYBILL CREEK
083021803, Jones, IA
Built 2014 Load: 42.4 t ADT: 69
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.