Total bridges
252
Public highway bridges in Montgomery County
County profile · official public datasets
Montgomery County, IN
252 public highway bridges tracked in the FHWA National Bridge Inventory: 51.2% rated Good, 46.4% Fair, 2.4% Poor.
- 252
- Public bridges
- 51.2%
- Good condition
- 2.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Montgomery County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 23%
- lowest Poor share in state
- 2.4%
- Poor-condition share
- 252
- public highway bridges
- 1983
- 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.
Montgomery County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Montgomery County ranks #21 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.4%). Montgomery County, Indiana contains 252 public highway bridges. Roughly 51.2% are rated “Good,” 46.4% “Fair,” and 2.4% “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
51.2%
129 of 252 rated 7-9
Fair condition
46.4%
117 of 252 rated 5-6
Poor condition
2.4%
6 of 252 rated 4 or below
In-state Poor-share rank
#21 of 92
Among Indiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 252 NBI-tracked bridges by lowest applicable component rating.
Good 51.2% (129)
Fair 46.4% (117)
Poor 2.4% (6)
Montgomery County's Poor-condition bridges carry 6,166 vehicle crossings a day
That is 1.1% of the county's reported daily bridge traffic on 2.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,028 crossings a day against 1,987 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 252 of 252 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
31.7% of Montgomery County's bridges have passed the 50-year mark
80 of the 252 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 51.2% 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 57.7% of the county's Poor-condition bridge traffic
SR 32 over MILL CREEK, built 1920, carries 3,556 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 6-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 6,166 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Montgomery County's bridges were built
252 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 9
1930–1939
9 bridges
- 1940s 5
1940–1949
5 bridges
- 1950s 9
1950–1959
9 bridges
- 1960s
1960–1969
40 bridges
- 1970s
1970–1979
27 bridges
- 1980s
1980–1989
52 bridges
- 1990s
1990–1999
57 bridges
- 2000s
2000–2009
39 bridges
- 2010s 8
2010–2019
8 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 1990s, when 57 of the county's bridges still in the inventory were built, which is 22.6% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1983, 5 years newer than the Indiana average of 1978.
How Montgomery County compares with Indiana's closest counties by inventory size
The 5 Indiana counties nearest Montgomery County in number of bridges, with their condition splits. Its 2.4% Poor share is the 3rd-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1981 is in line with the group.
Showing the 5 closest of 91 Indiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Clark County | 257 | 52.5% | 45.9% | 1.6% | 1987 |
| Randolph County | 257 | 38.1% | 53.3% | 8.6% | 1978 |
| Morgan County | 252 | 50.4% | 45.6% | 4% | 1986 |
| Montgomery County (this page) | 252 | 51.2% | 46.4% | 2.4% | 1983 |
| Shelby County | 247 | 32.4% | 60.3% | 7.3% | 1974 |
| Spencer County | 244 | 48.8% | 50% | 1.2% | 1982 |
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 Montgomery 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 Montgomery County, both outside Indiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IN (252 bridges here).
- Harlan County, KY · 252 bridges
- Oxford County, ME · 252 bridges
- Colfax County, NE · 252 bridges
- Medina County, OH · 252 bridges
Similar average build year
Nearest mean year-built outside IN (1983 here).
- Dallas County, TX · avg 1983 · 3,230 bridges
- Bexar County, TX · avg 1983 · 2,342 bridges
- Sedgwick County, KS · avg 1983 · 1,333 bridges
- Will County, IL · avg 1983 · 649 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (117)
OLD SR 47/CR 175 E
FairOver: I-74 EB/WB
00.63 W SR 47, Montgomery, IN
Built 1964 Load: 23.0 t ADT: 425
SR 25
FairOver: TURKEY RUN CREEK
01.41 S SR 55, Montgomery, IN
Built 1994 Load: 25.9 t ADT: 1,310
SR 47
FairOver: HAZEL CREEK
07.67 S SR 75, Montgomery, IN
Built 1995 Load: 27.2 t ADT: 783
WAVELAND RD
FairOver: LITTLE RACCO0N CREEK
01.00 W of CR 600 W, Montgomery, IN
Built 1999 Load: 28.1 t ADT: 120
OLD SR 55/CR 400 W
FairOver: I-74 EB/WB
04.13 W US 231, Montgomery, IN
Built 1963 Load: 28.5 t ADT: 1,167
US 231
FairOver: RATTLESNAKE CREEK
01.83 N SR 234, Montgomery, IN
Built 1931 Load: 28.8 t ADT: 5,328
US 231
FairOver: BRANCH OF OFFIELD CREEK
01.05 S SR 32, Montgomery, IN
Built 2003 Load: 28.8 t ADT: 7,755
US 136
FairOver: WALNUT FORK
04.17 E SR 32, Montgomery, IN
Built 1953 Load: 28.8 t ADT: 2,630
I-74 EB
FairOver: SR 47
02.45 E US 231, Montgomery, IN
Built 1964 Load: 28.8 t ADT: 17,525
I-74 WB
FairOver: SR 47
02.45 E US 231, Montgomery, IN
Built 1964 Load: 28.8 t ADT: 17,525
CR 1000E
FairOver: BIG RACCOON CREEK
00.30 N of CR 600 S, Montgomery, IN
Built 1950 Load: 28.8 t ADT: 450
SR 25
FairOver: EAST FORK COAL CREEK
00.02 N US 136, Montgomery, IN
Built 1955 Load: 29.2 t ADT: 1,666
SR 32
FairOver: WALNUT FORK
00.87 E SR 47 E JCT, Montgomery, IN
Built 1940 Load: 29.5 t ADT: 5,670
WAVELAND RD
FairOver: LITTLE RACCOON CREEK
00.60 W of CR 600 W, Montgomery, IN
Built 1999 Load: 29.7 t ADT: 100
SR 234
FairOver: INDIAN CREEK
00.73 W US 231, Montgomery, IN
Built 1946 Load: 29.8 t ADT: 620
I-74 EB
FairOver: SPRING BRANCH CREEK
01.81 W US 231, Montgomery, IN
Built 1964 Load: 29.8 t ADT: 15,613
I-74 WB
FairOver: SPRING BRANCH CREEK
01.81 W US 231, Montgomery, IN
Built 1964 Load: 29.8 t ADT: 15,613
BECKVILLE ROAD
FairOver: I-74 EB/WB
03.89 E SR 32, Montgomery, IN
Built 1964 Load: 30.0 t ADT: 110
TRACTION RD
FairOver: WALNUT CREEK
00.50 E of CR 225 E, Montgomery, IN
Built 1987 Load: 30.0 t ADT: 350
CR 500N
FairOver: BRANCH OF SUGAR CREEK
00.30 W of CR 575 E, Montgomery, IN
Built 1970 Load: 30.4 t ADT: 650
CR 450E
FairOver: BRANCH OF WALNUT CREEK
00.60 S of US 136, Montgomery, IN
Built 1998 Load: 30.4 t ADT: 100
NUCOR RD
FairOver: WALNUT CREEK
00.10 S of US 136, Montgomery, IN
Built 1974 Load: 30.4 t ADT: 2,300
DIVISION RD
FairOver: MILL CREEK
00.20 W of CR 500 W, Montgomery, IN
Built 1987 Load: 30.4 t ADT: 100
CR 625W
FairOver: EAST FORK OF COAL CREEK
00.50 S of CR 450N, Montgomery, IN
Built 1965 Load: 30.4 t ADT: 490
CR 500S
FairOver: SUGAR CREEK/UNNAMED RD
00.20 E CR 60 W, Montgomery, IN
Built 1972 Load: 30.4 t ADT: 320
CR 700E
FairOver: BOWER CREEK
00.10 N of CR 1000 N, Montgomery, IN
Built 2005 Load: 30.4 t ADT: 575
SR 234
FairOver: CORNSTALK CREEK
03.73 E US 231, Montgomery, IN
Built 1936 Load: 30.8 t ADT: 1,490
CR 400S
FairOver: OFFIELD CREEK
00.10 W of US 231, Montgomery, IN
Built 1965 Load: 31.0 t ADT: 130
SR 32
FairOver: MUSKRAT CREEK
04.52 E I-74, Montgomery, IN
Built 1928 Load: 31.4 t ADT: 7,330
CR 250S
FairOver: BRANCH OF SUGAR CREEK
00.10 W of CR 525 W, Montgomery, IN
Built 1970 Load: 31.7 t ADT: 130
CR 1100S
FairOver: HAW CREEK
01.70 E CR 55 E, Montgomery, IN
Built 1999 Load: 31.7 t ADT: 100
CR 175W
FairOver: BLACK CREEK
00.80 N of OLD SR 55, Montgomery, IN
Built 1973 Load: 32.3 t ADT: 100
CR 1100S
FairOver: HAW CREEK
01.80 E CR 55 E, Montgomery, IN
Built 1999 Load: 32.3 t ADT: 100
JOE ALLEN PKWY
FairOver: DRY BRANCH CREEK
00.00 Int of MILL St, Montgomery, IN
Built 1998 Load: 32.4 t ADT: 330
SR 25
FairOver: NORTH FORK COAL CREEK
01.86 N SR 55, Montgomery, IN
Built 1995 Load: 32.7 t ADT: 1,476
CR 950W
FairOver: NORTH FORK OF COAL CREEK
00.30 S of CR 1125 N, Montgomery, IN
Built 1988 Load: 32.7 t ADT: 60
CR 400W
FairOver: NORTH FORK OF COAL CREEK
00.20 N of CR 850 N, Montgomery, IN
Built 1973 Load: 32.7 t ADT: 730
CR 575W
FairOver: NORTH FORK OF COAL CREEK
01.00 E of CR 900 N, Montgomery, IN
Built 1973 Load: 32.7 t ADT: 150
CR 1000 N
FairOver: BOWER CREEK
00.20 W of CR 700 E, Montgomery, IN
Built 1945 Load: 32.7 t ADT: 390
CR 700E
FairOver: LITTLE POTATO CREEK
00.10 N of CR 85 N, Montgomery, IN
Built 1968 Load: 32.7 t ADT: 850
CR 650N
FairOver: LYE CREEK
00.60 W of CR 600 E, Montgomery, IN
Built 1986 Load: 32.7 t ADT: 60
CR 450E
FairOver: ARMENTROUT DREDGE DITCH
00.50 N of CR 700 N, Montgomery, IN
Built 1975 Load: 32.7 t ADT: 150
CR 275E
FairOver: SUGAR CREEK
00.30 N of CR 300 N, Montgomery, IN
Built 1985 Load: 32.7 t ADT: 240
CR 590E
FairOver: BRANCH OF SUGAR CREEK
00.20 S of CR 500 N, Montgomery, IN
Built 1997 Load: 32.7 t ADT: 150
CR 700E
FairOver: HONEY CREEK
00.10 N of MAIN ST, Montgomery, IN
Built 1997 Load: 32.7 t ADT: 1,300
CR 700E
FairOver: SUGAR CREEK
00.80 S of CR 650 N, Montgomery, IN
Built 1969 Load: 32.7 t ADT: 940
CR 1050N
FairOver: LITTLE POTATO CREEK
00.40 E of CR 1050 E, Montgomery, IN
Built 1967 Load: 32.7 t ADT: 650
CR 1075E
FairOver: LITTLE SUGAR CREEK
00.10 N of SR 32, Montgomery, IN
Built 1986 Load: 32.7 t ADT: 130
CR 450N
FairOver: HAZEL CREEK
00.70 E of CR 100 E, Montgomery, IN
Built 2003 Load: 32.7 t ADT: 100
CR 425 E
FairOver: BRANCH OF LITTLE SUGAR C
00.30 N of SR 32, Montgomery, IN
Built 1984 Load: 32.7 t ADT: 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.