County profile · official public datasets

Frontier County, NE

96 public highway bridges tracked in the FHWA National Bridge Inventory: 59.4% rated Good, 20.8% Fair, 19.8% Poor.

96
Public bridges
59.4%
Good condition
19.8%
Poor condition

The verdict

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

Frontier County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

82nd
of 88 on Poor share
19.8%
Poor-condition share
96
public highway bridges
1970
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.

Frontier County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Frontier County ranks #82 of 88 Nebraska counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 19.8%). Frontier County, Nebraska contains 96 public highway bridges. Roughly 59.4% are rated “Good,” 20.8% “Fair,” and 19.8% “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

96

Public highway bridges in Frontier County

Good condition

59.4%

57 of 96 rated 7-9

Fair condition

20.8%

20 of 96 rated 5-6

Poor condition

19.8%

19 of 96 rated 4 or below

In-state Poor-share rank

#82 of 88

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

Condition distribution

Share of 96 NBI-tracked bridges by lowest applicable component rating.

Good
59.4% (57)
Fair
20.8% (20)
Poor
19.8% (19)

Frontier County's Poor-condition bridges carry 1,090 vehicle crossings a day

That is 5.1% of the county's reported daily bridge traffic on 19.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 57 crossings a day against 240 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 96 of 96 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

47.9% of Frontier County's bridges have passed the 50-year mark

46 of the 96 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 59.4% 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 45% of the county's Poor-condition bridge traffic

N18 over MEDICINE CREEK, built 1945, carries 490 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 19-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1,090 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Frontier County's bridges were built

96 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1930s, when 20 of the county's bridges still in the inventory were built, which is 20.8% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1970, 7 years older than the Nebraska average of 1977.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 Nebraska counties nearest Frontier County in number of bridges, with their condition splits. Its 19.8% Poor share is the 6th-lowest of these 6. Its average build year of 1970 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 Frontier County and the 5 Nebraska counties closest to it in inventory size
County Bridges Poor
Frontier County (this page) 96 19.8%
Polk County 94 11.7%
Harlan County 92 9.8%
Dawes County 91 11%
Keith County 91 0%
Morrill County 91 0%

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

Similar inventory size

Nearest county inventories outside NE (96 bridges here).

Similar average build year

Nearest mean year-built outside NE (1970 here).

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

All 96 Good 57 Fair 20 Poor 19

Good-condition bridges (57)

FIELD DRIVE

Good

Over: MUDDY CREEK TRIB

4S EUSTIS E CANYON RD, Frontier, NE

Built 1935 Load: 9.0 t ADT: 2

N18

Good

Over: DEER CREEK

8E STOCKVILLE, Frontier, NE

Built 1979 Load: 12.0 t ADT: 250

FAS 1655

Good

Over: PLUM CREEK

SOUTHEDGE EUSTIS, Frontier, NE

Built 1980 Load: 17.0 t ADT: 555

N18

Good

Over: EAST MUDDY CREEK

20E STOCKVILLE, Frontier, NE

Built 1945 Load: 17.0 t ADT: 125

FAS 1545

Good

Over: SPRING CREEK

SOUTH EDGE OF STOCKVILLE, Frontier, NE

Built 1949 Load: 21.0 t ADT: 45

COLL 7291

Good

Over: CEDAR CREEK

JCT N23/N18 7.5E 7.8S, Frontier, NE

Built 1949 Load: 22.0 t ADT: 15

FAS 1575/CO RD 408

Good

Over: WEST MUDDY CREEK

JCT N23/N23S 16E 1.8N, Frontier, NE

Built 1970 Load: 22.0 t ADT: 100

RD 407

Good

Over: DEER CREEK TRIB

JCT N23/N18 16.2E 12.5S, Frontier, NE

Built 1974 Load: 22.0 t ADT: 225

COUNTY HIGHWAY

Good

Over: DEER CREEK

11E OF CURTIS, Frontier, NE

Built 2006 Load: 22.0 t ADT: 10

COUNTY HIGHWAY

Good

Over: CEDAR CREEK

8S OF CURTIS, Frontier, NE

Built 1983 Load: 22.0 t ADT: 40

COLL 7287

Good

Over: CEDAR CREEK

6S 2W OF CURTIS, Frontier, NE

Built 2002 Load: 22.0 t ADT: 60

MIDDLE CANYON ROAD

Good

Over: MUDDY CREEK TRIB

4.5S OF EUSTIS, Frontier, NE

Built 2005 Load: 22.0 t ADT: 50

COUNTY HIGHWAY

Good

Over: STREAM

.5SE OF EUSTIS, Frontier, NE

Built 1987 Load: 22.0 t ADT: 50

COUNTY HIGHWAY

Good

Over: WEST MUDDY CREEK

8W 3.5S EUSTIS, Frontier, NE

Built 2000 Load: 22.0 t ADT: 10

COUNTY HIGHWAY

Good

Over: COON CREEK

9S 6.2W OF STOCKVILLE, Frontier, NE

Built 2002 Load: 22.0 t ADT: 10

ROAD 748

Good

Over: PLUM CREEK TRIB

.5NE OF EUSTIS, Frontier, NE

Built 1935 Load: 22.0 t ADT: 200

COUNTY HIGHWAY

Good

Over: STREAM

6.5S 1.5W OF EUSTIS, Frontier, NE

Built 2002 Load: 22.0 t ADT: 10

N23

Good

Over: WELLS CANYON

0W CURTIS, Frontier, NE

Built 1948 Load: 22.0 t ADT: 1,535

N23

Good

Over: STREAM

1E CURTIS, Frontier, NE

Built 1933 Load: 22.0 t ADT: 955

COUNTY HIGHWAY

Good

Over: WEST MUDDY CREEK

14.5S 1W OF EUSTIS, Frontier, NE

Built 1981 Load: 23.0 t ADT: 15

FAS 1575

Good

Over: DEER CREEK

JCT N23/N18 15.2E 8.8S, Frontier, NE

Built 1949 Load: 25.0 t ADT: 225

N23

Good

Over: STREAM

0W EUSTIS, Frontier, NE

Built 1959 Load: 25.0 t ADT: 1,060

COUNTY HIGHWAY

Good

Over: FOX CREEK

6.5W OF MOOREFIELD, Frontier, NE

Built 1989 Load: 27.0 t ADT: 10

N23

Good

Over: DEER CREEK

6E MOOREFIELD, Frontier, NE

Built 1986 Load: 29.0 t ADT: 680

FAS 1675

Good

Over: EAST MUDDY CREEK

7MILES SW EUSTIS, Frontier, NE

Built 1987 Load: 32.0 t ADT: 30

N23

Good

Over: MEDICINE CREEK

3W CURTIS, Frontier, NE

Built 1950 Load: 32.0 t ADT: 1,535

COUNTY HIGHWAY

Good

Over: MEDICINE CREEK

1.5S 3.2E OF CURTIS, Frontier, NE

Built 2012 Load: 33.0 t ADT: 10

COUNTY HIGHWAY

Good

Over: SPRING CREEK

5N HUGH BUTLER LAKE, Frontier, NE

Built 2009 Load: 33.0 t ADT: 10

COUNTY HIGHWAY

Good

Over: STREAM

2S 6W OF EUSTIS, Frontier, NE

Built 1995 Load: 33.0 t ADT: 10

COUNTY HIGHWAY

Good

Over: ELKHORN CANYON

4W 3.7S OF MAYWOOD, Frontier, NE

Built 2000 Load: 33.0 t ADT: 35

ROAD 736

Good

Over: WEST MUDDY CREEK TRIB

11S 3W OF EUSTIS, Frontier, NE

Built 2005 Load: 33.0 t ADT: 10

N18

Good

Over: STREAM

.75E STOCKVILLE, Frontier, NE

Built 1993 Load: 33.0 t ADT: 250

N18

Good

Over: EAST MUDDY CREEK

21E STOCKVILLE, Frontier, NE

Built 2003 Load: 33.0 t ADT: 125

COLL 7289

Good

Over: CEDAR CREEK

2.7S 4.7W OF STOCKVILLE, Frontier, NE

Built 2002 Load: 34.0 t ADT: 30

COUNTY HIGHWAY

Good

Over: CURTIS CREEK

3W OF MOOREFIELD, Frontier, NE

Built 1996 Load: 34.0 t ADT: 10

FAS 1525

Good

Over: RED WILLOW CREEK

SJCT US83/N23 18.8S 5.5W, Frontier, NE

Built 2007 Load: 35.0 t ADT: 60

FAS 1653

Good

Over: WEST MUDDY CREEK

13.5E 2.5S OF STOCKVILLE, Frontier, NE

Built 1999 Load: 35.0 t ADT: 50

FAS 1545

Good

Over: MEDICINE CREEK

JCT N23/N18 7E 5.7S, Frontier, NE

Built 1995 Load: 35.0 t ADT: 55

N23

Good

Over: PLUM CREEK

2W EUSTIS, Frontier, NE

Built 2016 Load: 35.0 t ADT: 795

N23

Good

Over: PLUM CREEK

1W EUSTIS, Frontier, NE

Built 2016 Load: 35.0 t ADT: 795

COUNTY HIGHWAY

Good

Over: WEST MUDDY CREEK

6.5W 6.5S OF EUSTIS, Frontier, NE

Built 1999 Load: 36.0 t ADT: 15

N18

Good

Over: ELDER CREEK

24E STOCKVILLE, Frontier, NE

Built 2003 Load: 36.0 t ADT: 125

COUNTY HIGHWAY

Good

Over: DEER CREEK

5.5E OF MEDICINE CR DAM, Frontier, NE

Built 1998 Load: 38.0 t ADT: 10

N23

Good

Over: CURTIS CREEK

3NE CURTIS, Frontier, NE

Built 1948 Load: 38.0 t ADT: 955

COUNTY HIGHWAY

Good

Over: DEER CREEK

3.2E OF HARRY STRUNK LAKE, Frontier, NE

Built 1991 Load: 39.0 t ADT: 25

ROAD 729

Good

Over: SPRING CREEK TRIB

RED WILLOW RESERVOIR, Frontier, NE

Built 2018 Load: 40.0 t ADT: 60

COUNTY HIGHWAY

Good

Over: DEER CREEK

3.5S 9E OF STOCKVILLE, Frontier, NE

Built 2010 Load: 40.0 t ADT: 10

N18

Good

Over: WEST MUDDY CREEK

15E STOCKVILLE, Frontier, NE

Built 2003 Load: 41.0 t ADT: 125

RD 744

Good

Over: MEDICINE CREEK TRIB

1S 9EOF CURTIS, Frontier, NE

Built 2022 Load: 44.0 t ADT: 10

MIDDLE CANYON ROAD

Good

Over: MUDDY CREEK TRIB

5.2S 1.5W OF EUSTIS, Frontier, NE

Built 2019 Load: 44.0 t ADT: 25

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.