County profile · official public datasets

Divide County, ND

13 public highway bridges tracked in the FHWA National Bridge Inventory: 30.8% rated Good, 61.5% Fair, 7.7% Poor.

13
Public bridges
30.8%
Good condition
7.7%
Poor condition

The verdict

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

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

Top 47%
lowest Poor share in state
7.7%
Poor-condition share
13
public highway bridges
1975
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.

Divide County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Divide County ranks #25 of 53 North Dakota counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.7%). Divide County, North Dakota contains 13 public highway bridges. Roughly 30.8% are rated “Good,” 61.5% “Fair,” and 7.7% “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

13

Public highway bridges in Divide County

Good condition

30.8%

4 of 13 rated 7-9

Fair condition

61.5%

8 of 13 rated 5-6

Poor condition

7.7%

1 of 13 rated 4 or below

In-state Poor-share rank

#25 of 53

Among North Dakota counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 13 NBI-tracked bridges by lowest applicable component rating.

Good
30.8% (4)
Fair
61.5% (8)
Poor
7.7% (1)

Divide County's Poor-condition bridges carry 10 vehicle crossings a day

That is 0.4% of the county's reported daily bridge traffic on 7.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 10 crossings a day against 315 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 13 of 13 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

38.5% of Divide County's bridges have passed the 50-year mark

5 of the 13 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 30.8% 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

COUNTY HIGHWAY over CREEK, built 1960, carries 10 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 10 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Divide County's bridges were built

13 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 6 of the county's bridges still in the inventory were built, which is 46.2% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1975) matches the North Dakota average (1975).

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

How Divide County compares with North Dakota's closest counties by inventory size

The 5 North Dakota counties nearest Divide County in number of bridges, with their condition splits. Its 7.7% Poor share is the 4th-lowest of these 6. Its average build year of 1975 against a peer-group mean of 1971 is in line with the group.

Showing the 5 closest of 52 North Dakota counties eligible for comparison.

Bridge inventory size and condition shares for Divide County and the 5 North Dakota counties closest to it in inventory size
County Bridges Poor
Rolette County 18 0%
Logan County 13 15.4%
Divide County (this page) 13 7.7%
McIntosh County 11 9.1%
Kidder County 10 0%
Sheridan County 8 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 Divide 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 Divide County, both outside North Dakota so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside ND (13 bridges here).

Similar average build year

Nearest mean year-built outside ND (1975 here).

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

All 13 Good 4 Fair 8 Poor 1

All bridges (13)

COUNTY HIGHWAY

Fair

Over: LONG CREEK

4 NORTH OF CROSBY, Divide, ND

Built 1976 Load: 18.8 t ADT: 255

COUNTY HIGHWAY

Fair

Over: CREEK

8 EAST 1 SOUTH CROSBY, Divide, ND

Built 1979 Load: 20.0 t ADT: 61

COUNTY HIGHWAY

Fair

Over: CREEK

1 EAST 4 SOUTH OF CROSBY, Divide, ND

Built 1973 Load: 23.2 t ADT: 20

COUNTY HIGHWAY

Fair

Over: LONG CREEK

5 WEST 6 NORTH OF NOONAN, Divide, ND

Built 1933 Load: 24.6 t ADT: 35

COUNTY HIGHWAY

Fair

Over: LONG CREEK

9 NORTHWEST OF NOONAN, Divide, ND

Built 1976 Load: 27.0 t ADT: 50

COUNTY HIGHWAY

Fair

Over: CREEK

3 WEST 3 NORTH NOONAN, Divide, ND

Built 1969 Load: 37.8 t ADT: 20

COUNTY HIGHWAY

Fair

Over: LONG CREEK

5 EAST 4 NORTH OF CROSBY, Divide, ND

Built 1980 Load: 39.2 t ADT: 20

ND HIGHWAY 5

Fair

Over: CREEK

1 WEST ND 40 NORTH, Divide, ND

Built 1976 Load: 43.5 t ADT: 700

COUNTY HIGHWAY

Good

Over: LONG CREEK

8 EAST 5 NORTH OF CROSBY, Divide, ND

Built 1990 Load: 21.0 t ADT: 35

ND HIGHWAY 5

Good

Over: CREEK

1 EAST ND 40 NORTH, Divide, ND

Built 1967 Load: 30.7 t ADT: 410

114th AVE NW

Good

Over: CREEK

4 E 3 S OF CROSBY, Divide, ND

Built 2023 Load: 35.6 t ADT: 63

ND HIGHWAY 5

Good

Over: CREEK

5 EAST OF CROSBY, Divide, ND

Built 1976 Load: 65.8 t ADT: 750

COUNTY HIGHWAY

Poor

Over: CREEK

9 EAST OF CROSBY, Divide, ND

Built 1960 Load: 30.5 t ADT: 10

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.