County profile · official public datasets

LaGrange County, IN

100 public highway bridges tracked in the FHWA National Bridge Inventory: 45% rated Good, 54% Fair, 1% Poor.

100
Public bridges: 45%
Good condition: 1%
Poor condition

The verdict

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

LaGrange County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 7%
lowest Poor share in state: 1%
Poor-condition share: 100
public highway bridges: 1974
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.

LaGrange County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, LaGrange County ranks #6 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1%). LaGrange County, Indiana contains 100 public highway bridges. Roughly 45% are rated “Good,” 54% “Fair,” and 1% “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

100

Public highway bridges in LaGrange County

Good condition

45%

45 of 100 rated 7-9

Fair condition

54%

54 of 100 rated 5-6

Poor condition

1 of 100 rated 4 or below

In-state Poor-share rank

#6 of 92

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

Condition distribution

Share of 100 NBI-tracked bridges by lowest applicable component rating.

Good

45% (45)

Fair

54% (54)

Poor

1% (1)

LaGrange County's Poor-condition bridges carry 1,525 vehicle crossings a day

That is 0.5% of the county's reported daily bridge traffic on 1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,525 crossings a day against 3,707 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 100 of 100 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

48% of LaGrange County's bridges have passed the 50-year mark

48 of the 100 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 45% 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 100% of the county's Poor-condition bridge traffic

CR 200 SOUTH over LITTLE ELKHART RIVER, built 1984, carries 1,525 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 1-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1,525 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

1
1930s

2
1950s

34
1960s

8
1970s

10
1980s

18
1990s

15
2000s

9
2010s

3

What this shows Construction peaked in the 1950s, when 34 of the county's bridges still in the inventory were built, which is 34% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1974) matches the Indiana average (1978).

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

The 5 Indiana counties nearest LaGrange County in number of bridges, with their condition splits. Its 1% Poor share is the 1st-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1978 is in line with the group.

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

Bridge inventory size and condition shares for LaGrange County and the 5 Indiana counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Tipton County	113	42.5%	55.8%	1.8%	1983
Martin County	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 (this page)	100	45%	54%	1%	1974
Noble County	89	41.6%	49.4%	9%	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 LaGrange 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 LaGrange County, both outside Indiana so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IN (100 bridges here).

Ketchikan Gateway County, AK · 100 bridges
Gunnison County, CO · 100 bridges
Monroe County, FL · 100 bridges
Cheyenne County, KS · 100 bridges

Similar average build year

Nearest mean year-built outside IN (1974 here).

Knox County, TN · avg 1974 · 588 bridges
Summit County, OH · avg 1974 · 563 bridges
Onondaga County, NY · avg 1974 · 472 bridges
Orange County, NY · avg 1974 · 472 bridges

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

All 100 Good 45 Fair 54 Poor 1

Good-condition bridges (45)

Sort:

LaGrange County Bridge Snapshot

Condition distribution

LaGrange County's Poor-condition bridges carry 1,525 vehicle crossings a day

48% of LaGrange County's bridges have passed the 50-year mark

One structure carries 100% of the county's Poor-condition bridge traffic

How LaGrange 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

Good-condition bridges (45)

CR 100 WEST

CR 225 EAST

CR 1150 WEST

CR 200S

CR 1000 WEST

CR 1150W

CR 900 WEST

CR 100 EAST

CR 1050 EAST

CR 125 EAST

SR 9

CR 75 EAST

CR 100 SOUTH

CR 550 WEST

CR 1100 EAST

CR 390 EAST

CR 50 EAST

CR 100 SOUTH

CR 915 WEST

CR 400 SOUTH

CR 1100 WEST

SR 5

US 20

CR 425 SOUTH

CR 200 SOUTH

CR 765 SOUTH

CR 425 NORTH

SR 9

CR 200 EAST

CR 925 EAST

CR 600 W/OLNEY RD

CR 150 NORTH

CR 900 W/SNYDER RD

I-90

I-90 EB

I-90 WB

CR 575E

CR 475E

I-90 RAMP TO SR 9

SR 120

I-90 EB

I-90 WB

I-90 EB

I-90 EB

I-90 WB

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