County profile · official public datasets

Boone County, NE

237 public highway bridges tracked in the FHWA National Bridge Inventory: 66.7% rated Good, 29.5% Fair, 3.8% Poor.

237
Public bridges
66.7%
Good condition
3.8%
Poor condition

The verdict

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

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

Top 38%
lowest Poor share in state
3.8%
Poor-condition share
237
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.

Boone County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Boone County ranks #33 of 88 Nebraska counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.8%). Boone County, Nebraska contains 237 public highway bridges. Roughly 66.7% are rated “Good,” 29.5% “Fair,” and 3.8% “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

237

Public highway bridges in Boone County

Good condition

66.7%

158 of 237 rated 7-9

Fair condition

29.5%

70 of 237 rated 5-6

Poor condition

3.8%

9 of 237 rated 4 or below

In-state Poor-share rank

#33 of 88

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

Condition distribution

Share of 237 NBI-tracked bridges by lowest applicable component rating.

Good
66.7% (158)
Fair
29.5% (70)
Poor
3.8% (9)

Boone County's Poor-condition bridges carry 725 vehicle crossings a day

That is 1.1% of the county's reported daily bridge traffic on 3.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 81 crossings a day against 354 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 237 of 237 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

38.8% of Boone County's bridges have passed the 50-year mark

92 of the 237 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 66.7% 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 62.8% of the county's Poor-condition bridge traffic

N32 over NORTH SHELL CREEK, built 1973, carries 455 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 9-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 725 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Boone County's bridges were built

237 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1930s, when 50 of the county's bridges still in the inventory were built, which is 21.1% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year (1974) matches the Nebraska average (1977).

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

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

The 5 Nebraska counties nearest Boone County in number of bridges, with their condition splits. Its 3.8% Poor share is the 2nd-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1977 is in line with the group.

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

Bridge inventory size and condition shares for Boone County and the 5 Nebraska counties closest to it in inventory size
County Bridges Poor
Wayne County 251 9.6%
Scotts Bluff County 250 5.2%
Seward County 244 7.8%
Holt County 241 1.7%
Jefferson County 241 22.4%
Boone County (this page) 237 3.8%

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

Similar inventory size

Nearest county inventories outside NE (237 bridges here).

Similar average build year

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

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

All 237 Good 158 Fair 70 Poor 9

All bridges (237)

COUNTY HIGHWAY

Fair

Over: RAE CREEK

1N 1.3W OF PETERSBURG, Boone, NE

Built 2006 Load: 36.0 t ADT: 15

330TH AVE

Fair

Over: NORTH SHELL CREEK TRIB

12E .6N PETERSBURG, Boone, NE

Built 2007 Load: 36.0 t ADT: 10

N52

Fair

Over: STREAM

2.4N BELGRADE, Boone, NE

Built 1975 Load: 37.0 t ADT: 425

COUNTY HIGHWAY

Fair

Over: STREAM

2W 1.7S OF ST. EDWARDS, Boone, NE

Built 1995 Load: 38.0 t ADT: 60

FAS 2520

Fair

Over: PLUM CREEK

JCT N56/N14 4N 4.7W, Boone, NE

Built 1986 Load: 38.0 t ADT: 35

COUNTY HIGHWAY

Fair

Over: NORTH SHELL CREEK

3.5S 12.9E PETERSBURG, Boone, NE

Built 1935 Load: 38.0 t ADT: 15

COUNTY HIGHWAY

Fair

Over: STREAM

3W .2S ALBION, Boone, NE

Built 1998 Load: 39.0 t ADT: 40

FAS 2520

Fair

Over: VORHEES CREEK

WJCT N39/N91 4.5E 1.3S, Boone, NE

Built 1995 Load: 39.0 t ADT: 80

COUNTY HIGHWAY

Fair

Over: N BR TIMBER CREEK

3.5W 4.2S CEDAR RAPIDS, Boone, NE

Built 1986 Load: 40.0 t ADT: 30

COUNTY HIGHWAY

Fair

Over: PLUM CREEK

6W .4S ALBION, Boone, NE

Built 1974 Load: 40.0 t ADT: 15

FAS 2595

Fair

Over: SHELL CREEK

JCT N32/N45 5W 2.3S, Boone, NE

Built 2002 Load: 40.0 t ADT: 50

COUNTY HIGHWAY

Fair

Over: STREAM

3.6E CEDAR RAPIDS, Boone, NE

Built 1935 Load: 41.0 t ADT: 20

COUNTY HIGHWAY

Fair

Over: SHELL CREEK

7.5E 6.4N ALBION, Boone, NE

Built 2001 Load: 43.0 t ADT: 30

COUNTY HIGHWAY

Fair

Over: BOGUS CREEK

.6S 1.9W ST EDWARD, Boone, NE

Built 1983 Load: 43.0 t ADT: 65

COUNTY HIGHWAY

Fair

Over: ONEILL VALLEY

2E 4N ALBION, Boone, NE

Built 1994 Load: 43.0 t ADT: 40

COUNTY HIGHWAY

Fair

Over: STREAM

3W 4.7N ST. EDWARD, Boone, NE

Built 1995 Load: 44.0 t ADT: 45

COUNTY HIGHWAY

Fair

Over: STREAM

10E 1.7N PETERSBURG, Boone, NE

Built 1996 Load: 44.0 t ADT: 30

COUNTY HIGHWAY

Fair

Over: PLUM CREEK

9E .5S PRIMROSE, Boone, NE

Built 1973 Load: 46.0 t ADT: 20

FAS 2585

Fair

Over: ONEILL VALLEY

JCT N14/N32 5E 2.6S, Boone, NE

Built 1970 Load: 46.0 t ADT: 105

170TH ST

Fair

Over: SHELL CREEK

3.5S 8.2E OF PETERSBURG, Boone, NE

Built 1988 Load: 47.0 t ADT: 25

COUNTY HIGHWAY

Good

Over: STREAM

3S 3.6E ALBION, Boone, NE

Built 1935 Load: 6.0 t ADT: 30

COUNTY HIGHWAY

Good

Over: STREAM

4.5E 2.1S CEDAR RAPIDS, Boone, NE

Built 1935 Load: 11.0 t ADT: 35

COUNTY HIGHWAY

Good

Over: STREAM

1S 4.3E CEDAR RAPIDS, Boone, NE

Built 1986 Load: 11.0 t ADT: 20

COUNTY HIGHWAY

Good

Over: BEAVER CREEK

1E ALBION, Boone, NE

Built 1966 Load: 12.0 t ADT: 100

COUNTY HIGHWAY

Good

Over: STREAM

2.7E PRIMROSE, Boone, NE

Built 1935 Load: 16.0 t ADT: 40

COUNTY HIGHWAY

Good

Over: STREAM

1N 4W PETERSBURG, Boone, NE

Built 1935 Load: 17.0 t ADT: 35

COUNTY HIGHWAY

Good

Over: STREAM

5.9N 1W ST EDWARD, Boone, NE

Built 1935 Load: 18.0 t ADT: 40

300TH AVE

Good

Over: SHELL CREEK

8N 4.5E ALBION, Boone, NE

Built 1975 Load: 18.0 t ADT: 20

COUNTY HIGHWAY

Good

Over: PLUM CREEK

2.6S 7W ST EDWARD, Boone, NE

Built 1989 Load: 21.0 t ADT: 30

COUNTY HIGHWAY

Good

Over: N BR TIMBER CREEK

1S 5.5W CEDAR RAPIDS, Boone, NE

Built 1984 Load: 22.0 t ADT: 50

COLL 7635

Good

Over: STREAM

1.4N OF ST. EDWARD, Boone, NE

Built 1980 Load: 22.0 t ADT: 200

COUNTY HIGHWAY

Good

Over: STREAM

3E .4S PRIMROSE, Boone, NE

Built 1985 Load: 22.0 t ADT: 30

COUNTY HIGHWAY

Good

Over: STREAM

1.5S 2.2E PETERSBURG, Boone, NE

Built 1985 Load: 22.0 t ADT: 35

FAS 2530

Good

Over: STREAM

3.7E 3.5S PETERSBURG, Boone, NE

Built 1986 Load: 22.0 t ADT: 45

COUNTY HIGHWAY

Good

Over: STREAM

3.5N 1E PETERSBURG, Boone, NE

Built 1980 Load: 22.0 t ADT: 25

COUNTY HIGHWAY

Good

Over: STREAM

1.2E PRIMROSE, Boone, NE

Built 1983 Load: 22.0 t ADT: 80

320TH AVE

Good

Over: SHELL CREEK

10.5E 3.75S PETERSBURG, Boone, NE

Built 1985 Load: 22.0 t ADT: 30

FAS 2555

Good

Over: CEDAR RIVER

JCT N52/N91 4.3S, Boone, NE

Built 1982 Load: 22.0 t ADT: 90

COLL 7632

Good

Over: STREAM

2.5S 7.5E PETERSBURG, Boone, NE

Built 1986 Load: 22.0 t ADT: 25

PRIVATE DRIVE

Good

Over: SHELL CREEK TRIB

2.5S 8.2E OF PETERSBURG, Boone, NE

Built 1989 Load: 22.0 t ADT: 10

COUNTY HIGHWAY

Good

Over: PLUM CREEK

5W 1.7S ALBION, Boone, NE

Built 1975 Load: 22.0 t ADT: 20

FAS 2250

Good

Over: STREAM

JCT N14/N91 .7W .5N, Boone, NE

Built 1981 Load: 22.0 t ADT: 390

COUNTY HIGHWAY

Good

Over: STREAM

2.5S 7E PETERSBURG, Boone, NE

Built 1983 Load: 22.0 t ADT: 15

310TH ST

Good

Over: PLUM CREEK

1S 9.5E PRIMROSE, Boone, NE

Built 1983 Load: 22.0 t ADT: 20

COUNTY HIGHWAY

Good

Over: VORHEES CREEK

1.5N 1.8E BOONE, Boone, NE

Built 1999 Load: 22.0 t ADT: 35

N14

Good

Over: STREAM

12S ALBION, Boone, NE

Built 1960 Load: 22.0 t ADT: 1,130

N14

Good

Over: BOGUS CREEK

6S ALBION, Boone, NE

Built 1957 Load: 22.0 t ADT: 1,605

N14

Good

Over: STREAM

4S ALBION, Boone, NE

Built 1957 Load: 22.0 t ADT: 1,605

N14

Good

Over: STREAM

2NW ALBION, Boone, NE

Built 1937 Load: 22.0 t ADT: 2,905

N14

Good

Over: STREAM

1S PETERSBURG, Boone, NE

Built 1943 Load: 22.0 t ADT: 2,280

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

Related

Browse all → | Rankings →
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.