County profile · official public datasets

Randolph County, IN

257 public highway bridges tracked in the FHWA National Bridge Inventory: 38.1% rated Good, 53.3% Fair, 8.6% Poor.

257
Public bridges: 38.1%
Good condition: 8.6%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Randolph County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

78th
of 92 on Poor share: 8.6%
Poor-condition share: 257
public highway bridges: 1978
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.

Randolph County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Randolph County ranks #78 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.6%). Randolph County, Indiana contains 257 public highway bridges. Roughly 38.1% are rated “Good,” 53.3% “Fair,” and 8.6% “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.

Total bridges

257

Public highway bridges in Randolph County

Good condition

38.1%

98 of 257 rated 7-9

Fair condition

53.3%

137 of 257 rated 5-6

Poor condition

8.6%

22 of 257 rated 4 or below

In-state Poor-share rank

#78 of 92

Among Indiana counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 257 NBI-tracked bridges by lowest applicable component rating.

Good

38.1% (98)

Fair

53.3% (137)

Poor

8.6% (22)

Randolph County's Poor-condition bridges carry 11,309 vehicle crossings a day

That is 5.4% of the county's reported daily bridge traffic on 7.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 595 crossings a day against 974 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 254 of 257 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

33.5% of Randolph County's bridges have passed the 50-year mark

86 of the 257 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 38.1% 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 25.7% of the county's Poor-condition bridge traffic

SR 32 over WHITE RIVER, built 1956, carries 2,909 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 22-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 11,309 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

1
1910s

4
1920s

1
1930s

8
1940s

14
1950s

9
1960s

27
1970s

58
1980s

68
1990s

42
2000s

10
2010s

10
2020s

5

What this shows Construction peaked in the 1980s, when 68 of the county's bridges still in the inventory were built, which is 26.5% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1978) matches the Indiana average (1978).

How Randolph County compares with Indiana's closest counties by inventory size

The 5 Indiana counties nearest Randolph County in number of bridges, with their condition splits. Its 8.6% Poor share is the 6th-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1982 is in line with the group.

Showing the 5 closest of 91 Indiana counties eligible for comparison.

Bridge inventory size and condition shares for Randolph County and the 5 Indiana counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Bartholomew County	269	53.5%	43.1%	3.3%	1982
Clark County	257	52.5%	45.9%	1.6%	1987
Randolph County (this page)	257	38.1%	53.3%	8.6%	1978
Montgomery County	252	51.2%	46.4%	2.4%	1983
Morgan County	252	50.4%	45.6%	4%	1986
Shelby County	247	32.4%	60.3%	7.3%	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 Randolph 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 Randolph County, both outside Indiana so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IN (257 bridges here).

District of Columbia County, DC · 257 bridges
Linn County, KS · 257 bridges
Walsh County, ND · 257 bridges
Jackson County, OH · 257 bridges

Similar average build year

Nearest mean year-built outside IN (1978 here).

Orange County, CA · avg 1978 · 1,164 bridges
Sumner County, KS · avg 1978 · 659 bridges
Livingston County, IL · avg 1978 · 579 bridges
Buncombe County, NC · avg 1978 · 555 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 257 Good 98 Fair 137 Poor 22

Fair-condition bridges (137)

Sort:

Randolph County Bridge Snapshot

Condition distribution

Randolph County's Poor-condition bridges carry 11,309 vehicle crossings a day

33.5% of Randolph County's bridges have passed the 50-year mark

One structure carries 25.7% of the county's Poor-condition bridge traffic

How Randolph County compares with Indiana's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Fair-condition bridges (137)

BASE LINE ROAD

CR 650E

CR 1150W

CR 700S

CR 900N

CR 800E

CR 500W

CR 300E

SR 28

CR 100W

CR 400E

CR 400N

STATE LINE ROAD

CR 800E

CR 150W

SR 1

CR 50S

STATE LINE ROAD

CR 600N

CR 1200W

CR 400W

CR 500W

CR 400W

BASE LINE ROAD

CR 400W

CR 1250W

SR 1

GREENVILLE PK

CR 1000S

SR 1

CR 30S

CR 100E

CR 75N

CR 800N

CR 700S

CR 600W

CR 100S

CR 1050S

CR 700E

CR 620E

CR 625W

CR 900S

US 27

CR 600E

STOCKYARD RD

BASE LINE ROAD

CR 600N

CR 500N

SR 28

CR 500S

Related