Total bridges
104
Public highway bridges in Martin County
County profile · official public datasets
Martin County, IN
104 public highway bridges tracked in the FHWA National Bridge Inventory: 40.4% rated Good, 51.9% Fair, 7.7% Poor.
- 104
- Public bridges
- 40.4%
- Good condition
- 7.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Martin County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 73rd
- of 92 on Poor share
- 7.7%
- Poor-condition share
- 104
- public highway bridges
- 1977
- 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.
Martin County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Martin County ranks #73 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.7%). Martin County, Indiana contains 104 public highway bridges. Roughly 40.4% are rated “Good,” 51.9% “Fair,” and 7.7% “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
40.4%
42 of 104 rated 7-9
Fair condition
51.9%
54 of 104 rated 5-6
Poor condition
7.7%
8 of 104 rated 4 or below
In-state Poor-share rank
#73 of 92
Among Indiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 104 NBI-tracked bridges by lowest applicable component rating.
Good 40.4% (42)
Fair 51.9% (54)
Poor 7.7% (8)
Martin County's Poor-condition bridges carry 735 vehicle crossings a day
That is 0.6% of the county's reported daily bridge traffic on 7.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 92 crossings a day against 1,279 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 104 of 104 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.7% of Martin County's bridges have passed the 50-year mark
35 of the 104 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 40.4% 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 27.2% of the county's Poor-condition bridge traffic
ROUTE H-85 over TRIBUTARY/TURKEY CREEK, built 1942, carries 200 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 8-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 735 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Martin County's bridges were built
104 bridges with a recorded construction year, grouped by decade
- pre-1900 6
Built before 1900
6 bridges
- 1900s 3
1900–1909
3 bridges
- 1910s 3
1910–1919
3 bridges
- 1920s 3
1920–1929
3 bridges
- 1930s
1930–1939
8 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 1
1950–1959
1 bridges
- 1960s 4
1960–1969
4 bridges
- 1970s 5
1970–1979
5 bridges
- 1980s
1980–1989
11 bridges
- 1990s
1990–1999
15 bridges
- 2000s
2000–2009
20 bridges
- 2010s
2010–2019
15 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 2000s, when 20 of the county's bridges still in the inventory were built, which is 19.2% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1977) matches the Indiana average (1978).
How Martin County compares with Indiana's closest counties by inventory size
The 5 Indiana counties nearest Martin County in number of bridges, with their condition splits. Its 7.7% Poor share is the 4th-lowest of these 6. Its average build year of 1977 against a peer-group mean of 1976 is in line with the group.
Showing the 5 closest of 91 Indiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Brown County | 114 | 20.2% | 63.2% | 16.7% | 1964 |
| Tipton County | 113 | 42.5% | 55.8% | 1.8% | 1983 |
| Martin County (this page) | 104 | 40.4% | 51.9% | 7.7% | 1977 |
| Pulaski County | 102 | 34.3% | 62.7% | 2.9% | 1976 |
| Fayette County | 100 | 33% | 57% | 10% | 1981 |
| LaGrange County | 100 | 45% | 54% | 1% | 1974 |
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 Martin 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 Martin County, both outside Indiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IN (104 bridges here).
- Nassau County, FL · 104 bridges
- Brooks County, GA · 104 bridges
- Grady County, GA · 104 bridges
- Bonner County, ID · 104 bridges
Similar average build year
Nearest mean year-built outside IN (1977 here).
- San Diego County, CA · avg 1977 · 1,632 bridges
- King County, WA · avg 1977 · 1,238 bridges
- Riverside County, CA · avg 1977 · 1,117 bridges
- Shelby County, TN · avg 1977 · 1,077 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (54)
DEEP CUT LAKE ROAD
FairOver: BEAVER CREEK
0.36 S OF US 50, Martin, IN
Built 1910 Load: 0.0 t ADT: 63
RUTHERFORD ROAD
FairOver: HOFFMAN RUN
0.07 W OF DIVINE ROAD, Martin, IN
Built 1928 Load: 11.8 t ADT: 63
LUMPKIN ROAD
FairOver: EAST BRANCH OF SLATE CR
0.08 E OF US 231, Martin, IN
Built 1967 Load: 12.5 t ADT: 63
BRICKYARD ROAD
FairOver: BOGGS CREEK
0.04 N OF US 50, Martin, IN
Built 1848 Load: 16.8 t ADT: 430
ROUTE H-45
FairOver: INDIANA RAILROAD
0.3 KM SW OF RT. H-21A, Martin, IN
Built 1936 Load: 22.2 t ADT: 2,000
US 231
FairOver: LITTLE BOGGS CREEK
03.09 N US 50, Martin, IN
Built 1940 Load: 24.0 t ADT: 5,613
H-161
FairOver: TRIBUTARY TO BOGGS CREEK
2.01 KM NW OF RT. H-35, Martin, IN
Built 2009 Load: 27.7 t ADT: 500
ABEL HILL ROAD
FairOver: LOST RIVER
0.01 W SIMMONS CREEK RD, Martin, IN
Built 1996 Load: 28.8 t ADT: 99
DEEP CUT CONNECTOR
FairOver: BEAVER CREEK
0.02 S OF US 50, Martin, IN
Built 2013 Load: 29.2 t ADT: 63
RIVER ROAD
FairOver: SIMMONS CREEK
0.02 N SIMMONS CREEK RD, Martin, IN
Built 1932 Load: 29.6 t ADT: 52
SR 550
FairOver: EAST FORK WHITE RIVER
02.64 E US 50, Martin, IN
Built 1988 Load: 29.8 t ADT: 424
BEARD ROAD
FairOver: HAW CREEK
0.74 S BROOKS BRIDGE ROAD, Martin, IN
Built 1995 Load: 29.9 t ADT: 63
SR 550
FairOver: WILLOW CREEK
04.82 W US 150, Martin, IN
Built 1992 Load: 30.1 t ADT: 424
SR 450
FairOver: INDIAN CREEK
07.64 E US 50, Martin, IN
Built 1976 Load: 30.5 t ADT: 450
H-331
FairOver: LAKE WOOD TRIBUTARY
1 KM WEST OF H-290, Martin, IN
Built 2006 Load: 30.5 t ADT: 105
WEISBACH ROAD
FairOver: BEAVER CREEK
0.10 W DEEP CUT LAKE ROAD, Martin, IN
Built 1995 Load: 30.5 t ADT: 250
WINDOM ROAD
FairOver: BLUE CREEK
0.46 S OF RIVER ROAD, Martin, IN
Built 1992 Load: 30.5 t ADT: 71
US 231
FairOver: HAW CREEK
04.31 S US 50, Martin, IN
Built 1930 Load: 30.8 t ADT: 6,443
US 50
FairOver: BOGGS CREEK
01.43 E SR 550, Martin, IN
Built 1970 Load: 30.8 t ADT: 7,260
US 231
FairOver: BRANCH SLATE CREEK
02.64 N SR 56, Martin, IN
Built 1986 Load: 30.8 t ADT: 6,334
CHERRY ROAD
FairOver: WEST BOGGS CREEK
0.21 N OF BRICKYARD ROAD, Martin, IN
Built 1969 Load: 30.8 t ADT: 430
ROUTE H-383
FairOver: FIRST CREEK
1 KM SOUTH OF ROUTE H-140, Martin, IN
Built 2006 Load: 31.0 t ADT: 200
ROUTE H-58
FairOver: TRIBUTARY/TURKEY CREEK
0.3KM WEST OF H-8, Martin, IN
Built 1989 Load: 31.8 t ADT: 2,000
US 231
FairOver: BRANCH FRIENDS CREEK
01.94 S US 50, Martin, IN
Built 1930 Load: 32.7 t ADT: 6,443
WINDOM ROAD
FairOver: LOST RIVER
0.35 S OF PROGRESS SCH RD, Martin, IN
Built 1972 Load: 32.7 t ADT: 34
WINDOM ROAD
FairOver: GRASSY CREEK
0.15 N OF PROGRESS SCH RD, Martin, IN
Built 1972 Load: 32.7 t ADT: 63
BARN RUN ROAD
FairOver: BARN RUN
0.90 N OF RUTHERFORD ROAD, Martin, IN
Built 1993 Load: 32.7 t ADT: 24
LOVE CEMETERY ROAD
FairOver: SEED TICK CREEK
0.23 N OF DAY ROAD, Martin, IN
Built 2009 Load: 32.7 t ADT: 190
ROUTE H58
FairOver: TURKEY CREEK
2.5KM E OF H45, Martin, IN
Built 1987 Load: 33.0 t ADT: 250
REINHART ROAD
FairOver: WEST BOGGS CREEK
0.14 W LOVE CEMETERY ROAD, Martin, IN
Built 1900 Load: 33.7 t ADT: 63
ROUTE H-165
FairOver: SULPHUR CREEK
30 M WEST OF H-162, Martin, IN
Built 2006 Load: 35.2 t ADT: 100
SR 650
FairOver: BEAVER CREEK
00.83 E US 50, Martin, IN
Built 1956 Load: 36.0 t ADT: 1,299
US 150
FairOver: SAM CREEK
05.96 E SR 550, Martin, IN
Built 1924 Load: 36.3 t ADT: 1,071
HAW CREEK ROAD
FairOver: HAW CREEK
0.93 S BROOKS BRIDGE ROAD, Martin, IN
Built 1900 Load: 36.8 t ADT: 63
MOUNT CALVARY ROAD
FairOver: WEST BOGGS CREEK
0.04 N OF WOOD SCHOOL RD, Martin, IN
Built 1995 Load: 37.6 t ADT: 159
ROUTE H-58
FairOver: SULFUR CREEK
200M E OF H-162, Martin, IN
Built 1987 Load: 38.2 t ADT: 250
ROUTE H58
FairOver: BRANCH OF TURKEY CREEK
50M W OF H99, Martin, IN
Built 1989 Load: 38.2 t ADT: 250
SPOUT SPRINGS ROAD
FairOver: BEAVER CREEK
0.91 S OF US 50, Martin, IN
Built 1962 Load: 38.3 t ADT: 740
US 50
FairOver: EAST FORK WHITE RIVER
00.30 W US 150, Martin, IN
Built 1991 Load: 38.6 t ADT: 7,684
ROUTE PT-2
FairOver: SEED TICK CREEK
0.5 KM WEST OF JT-15, Martin, IN
Built 2005 Load: 38.8 t ADT: 2
SHERFIC SCHOOL RD
FairOver: BEAVER CREEK
0.04 S OF WEISBACH ROAD, Martin, IN
Built 1900 Load: 39.8 t ADT: 250
DIVINE ROAD
FairOver: HOFFMAN RUN
0.07 S OF RUTHERFORD ROAD, Martin, IN
Built 1997 Load: 39.9 t ADT: 63
CALE ROAD
FairOver: SULPHUR CREEK
0.07 E SULPHUR HOLLOW LN, Martin, IN
Built 2010 Load: 40.6 t ADT: 63
US 231
FairOver: BRANCH FRIENDS CREEK
00.41 S US 50, Martin, IN
Built 1992 Load: 41.5 t ADT: 6,851
RIVER ROAD
FairOver: BLUE CREEK
0.54 N SIMMONS CREEK RD, Martin, IN
Built 1930 Load: 41.9 t ADT: 52
H-58
FairOver: BRANCH OF TURKEY CREEK
0.5 KM EAST OF H-60, Martin, IN
Built 2007 Load: 43.3 t ADT: 2,000
RT. H-30
FairOver: BRANCH OF BOGGS CREEK
1 KM N. OF H-142, Martin, IN
Built 2012 Load: 45.9 t ADT: 190
ROUTE H-161
FairOver: BOGGS CREEK
0.2 KM NORTH OF H201, Martin, IN
Built 2008 Load: 46.3 t ADT: 200
H-496
FairOver: BOGGS CREEK
0.3 KM WEST OF H-30, Martin, IN
Built 1978 Load: 47.7 t ADT: 80
ROUTE H-301
FairOver: BRANCH OF FIRST CREEK
30KM S OF H-290, Martin, IN
Built 1985 Load: 48.4 t ADT: 500
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.