Total bridges
220
Public highway bridges in Dubois County
County profile · official public datasets
Dubois County, IN
220 public highway bridges tracked in the FHWA National Bridge Inventory: 49.5% rated Good, 47.3% Fair, 3.2% Poor.
- 220
- Public bridges
- 49.5%
- Good condition
- 3.2%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Dubois County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 32%
- lowest Poor share in state
- 3.2%
- Poor-condition share
- 220
- public highway bridges
- 1982
- 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.
Dubois County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Dubois County ranks #29 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.2%). Dubois County, Indiana contains 220 public highway bridges. Roughly 49.5% are rated “Good,” 47.3% “Fair,” and 3.2% “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
49.5%
109 of 220 rated 7-9
Fair condition
47.3%
104 of 220 rated 5-6
Poor condition
3.2%
7 of 220 rated 4 or below
In-state Poor-share rank
#29 of 92
Among Indiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 220 NBI-tracked bridges by lowest applicable component rating.
Good 49.5% (109)
Fair 47.3% (104)
Poor 3.2% (7)
Dubois County's Poor-condition bridges carry 2,142 vehicle crossings a day
That is 0.6% of the county's reported daily bridge traffic on 3.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 306 crossings a day against 1,662 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 220 of 220 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
30.5% of Dubois County's bridges have passed the 50-year mark
67 of the 220 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 49.5% 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 43.3% of the county's Poor-condition bridge traffic
DIVISION Rd over CROOKED Creek, built 1991, carries 928 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 7-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 2,142 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Dubois County's bridges were built
220 bridges with a recorded construction year, grouped by decade
- 1900s 2
1900–1909
2 bridges
- 1920s 8
1920–1929
8 bridges
- 1930s 8
1930–1939
8 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 5
1950–1959
5 bridges
- 1960s
1960–1969
25 bridges
- 1970s
1970–1979
26 bridges
- 1980s
1980–1989
37 bridges
- 1990s
1990–1999
60 bridges
- 2000s
2000–2009
33 bridges
- 2010s 9
2010–2019
9 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 1990s, when 60 of the county's bridges still in the inventory were built, which is 27.3% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1982) matches the Indiana average (1978).
How Dubois County compares with Indiana's closest counties by inventory size
The 5 Indiana counties nearest Dubois County in number of bridges, with their condition splits. Its 3.2% Poor share is the 2nd-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1976 is 6 years newer.
Showing the 5 closest of 91 Indiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| LaPorte County | 227 | 33.5% | 59.9% | 6.6% | 1972 |
| Daviess County | 221 | 59.3% | 40.7% | 0% | 1993 |
| Decatur County | 220 | 34.5% | 58.6% | 6.8% | 1971 |
| Dubois County (this page) | 220 | 49.5% | 47.3% | 3.2% | 1982 |
| Sullivan County | 217 | 29.5% | 65.4% | 5.1% | 1966 |
| White County | 214 | 36% | 60.3% | 3.7% | 1978 |
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 Dubois 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 Dubois County, both outside Indiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IN (220 bridges here).
- Bibb County, GA · 220 bridges
- Taylor County, IA · 220 bridges
- Winn County, LA · 220 bridges
- Thayer County, NE · 220 bridges
Similar average build year
Nearest mean year-built outside IN (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Jackson County, MO · avg 1982 · 930 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Champaign County, IL · avg 1982 · 727 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (7)
CR 850E
PoorOver: DILLON CREEK
00.30 N DUBOIS-CUZCO RD, Dubois, IN
Built 1900 Load: 13.5 t ADT: 27
CR 250 E
PoorOver: Branch of INDIAN Creek
00.40 SE of 660 S., Dubois, IN
Built 1990 Load: 17.0 t ADT: 2
CELESTINE Rd N
PoorOver: POLSON Creek
00.10 S of SR 545, Dubois, IN
Built 1967 Load: 21.9 t ADT: 844
DIVISION Rd
PoorOver: CROOKED Creek
00.60 E of CR 600 W, Dubois, IN
Built 1991 Load: 24.1 t ADT: 928
ST ANTHONY Rd W
PoorOver: Branch of FLAT Creek
00.60 N of CR 450 S, Dubois, IN
Built 1979 Load: 28.2 t ADT: 298
Old Rd 162
PoorOver: INDIAN Creek
00.10 S of Old Rd. 162, Dubois, IN
Built 1920 Load: 30.4 t ADT: 16
PINE RIDGE Rd
PoorOver: FLAT Creek
00.10 S of SR 64, Dubois, IN
Built 1995 Load: 30.4 t ADT: 27
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.