County profile · official public datasets

Keith County, NE

91 public highway bridges tracked in the FHWA National Bridge Inventory: 76.9% rated Good, 23.1% Fair, 0% Poor.

91
Public bridges: 76.9%
Good condition: 0%
Poor condition

The verdict

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

Keith County pairs a top-5% lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 2%
lowest Poor share in state: 0%
Poor-condition share: 91
public highway bridges: 1972
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.

Keith County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Keith County ranks #2 of 88 Nebraska counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Keith County, Nebraska contains 91 public highway bridges. Roughly 76.9% are rated “Good,” 23.1% “Fair,” and 0% “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

Public highway bridges in Keith County

Good condition

76.9%

70 of 91 rated 7-9

Fair condition

23.1%

21 of 91 rated 5-6

Poor condition

0 of 91 rated 4 or below

In-state Poor-share rank

#2 of 88

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

Condition distribution

Share of 91 NBI-tracked bridges by lowest applicable component rating.

Good

76.9% (70)

Fair

23.1% (21)

Poor

0% (0)

65.9% of Keith County's bridges have passed the 50-year mark

60 of the 91 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 76.9% 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.

1920s

1
1930s

8
1940s

2
1950s

1
1960s

34
1970s

20
1980s

11
1990s

7
2000s

6
2010s

1

What this shows Construction peaked in the 1960s, when 34 of the county's bridges still in the inventory were built, which is 37.4% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1972, 5 years older than the Nebraska average of 1977.

How Keith County compares with Nebraska's closest counties by inventory size

The 5 Nebraska counties nearest Keith County in number of bridges, with their condition splits. Its 0% Poor share is the 2nd-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1970 is in line with the group.

Showing the 5 closest of 87 Nebraska counties eligible for comparison.

Bridge inventory size and condition shares for Keith County and the 5 Nebraska counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Polk County	94	57.4%	30.9%	11.7%	1975
Harlan County	92	63%	27.2%	9.8%	1969
Dawes County	91	67%	22%	11%	1965
Morrill County	91	72.5%	27.5%	0%	1969
Keith County (this page)	91	76.9%	23.1%	0%	1972
Kimball County	88	70.5%	28.4%	1.1%	1971

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 Keith 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 Keith County, both outside Nebraska so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside NE (91 bridges here).

Baxter County, AR · 91 bridges
Breckinridge County, KY · 91 bridges
Reynolds County, MO · 91 bridges
Lee County, SC · 91 bridges

Similar average build year

Nearest mean year-built outside NE (1972 here).

Santa Clara County, CA · avg 1972 · 964 bridges
Madison County, AL · avg 1972 · 710 bridges
Kern County, CA · avg 1972 · 668 bridges
York County, PA · avg 1972 · 569 bridges

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

All 91 Good 70 Fair 21 Poor 0

Good-condition bridges (70)

Sort:

Keith County Bridge Snapshot

Condition distribution

65.9% of Keith County's bridges have passed the 50-year mark

How Keith County compares with Nebraska'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 (70)

COUNTY HIGHWAY

US26-N61

COUNTY HIGHWAY

ROAD M

FAS 1345

COUNTY HIGHWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

US26

US30

US30

PRIVATE DRIVE

US30

US30

US30

US30

US30

ROAD M5

I80

I80

I80

I80

I80

L51C PAXTON CNLK

STAGECOACH TRAIL

ROAD P

COUNTY HIGHWAY

L51A BRULE CNLK

COUNTY HIGHWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

ROAD K

L51B ROSCOE CNLK

COLL 7243

COUNTY HIGHWAY

I80

I80

ROAD D

COUNTY HIGHWAY

US26

US30

US30

US30

US30

PRIVATE DRIVE

PRIVATE DRIVE

US30

US30

US30

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