County profile · official public datasets

Eddy County, ND

27 public highway bridges tracked in the FHWA National Bridge Inventory: 59.3% rated Good, 29.6% Fair, 11.1% Poor.

27
Public bridges: 59.3%
Good condition: 11.1%
Poor condition

The verdict

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

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

33rd
of 53 on Poor share: 11.1%
Poor-condition share: 27
public highway bridges: 1979
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.

Eddy County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Eddy County ranks #33 of 53 North Dakota counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11.1%). Eddy County, North Dakota contains 27 public highway bridges. Roughly 59.3% are rated “Good,” 29.6% “Fair,” and 11.1% “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

Public highway bridges in Eddy County

Good condition

59.3%

16 of 27 rated 7-9

Fair condition

29.6%

8 of 27 rated 5-6

Poor condition

11.1%

3 of 27 rated 4 or below

In-state Poor-share rank

#33 of 53

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

Condition distribution

Share of 27 NBI-tracked bridges by lowest applicable component rating.

Good

59.3% (16)

Fair

29.6% (8)

Poor

11.1% (3)

Eddy County's Poor-condition bridges carry 65 vehicle crossings a day

That is 0.8% of the county's reported daily bridge traffic on 11.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 22 crossings a day against 481 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 27 of 27 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

25.9% of Eddy County's bridges have passed the 50-year mark

7 of the 27 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 59.3% 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 76.9% of the county's Poor-condition bridge traffic

COUNTY HIGHWAY over JAMES RIVER, built 1904, carries 50 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 3-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 65 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

1
1930s

2
1940s

1
1950s

1
1960s

1
1970s

3
1980s

13
1990s

1
2000s

2
2010s

2

What this shows Construction peaked in the 1980s, when 13 of the county's bridges still in the inventory were built, which is 48.1% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1979) matches the North Dakota average (1975).

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

The 5 North Dakota counties nearest Eddy County in number of bridges, with their condition splits. Its 11.1% Poor share is the 4th-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1976 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 Eddy County and the 5 North Dakota counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Sargent County	30	53.3%	30%	16.7%	1978
Burke County	29	13.8%	69%	17.2%	1968
Mountrail County	27	59.3%	37%	3.7%	1989
Eddy County (this page)	27	59.3%	29.6%	11.1%	1979
Oliver County	24	41.7%	50%	8.3%	1974
Renville County	24	25%	66.7%	8.3%	1972

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 Eddy 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 Eddy County, both outside North Dakota so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside ND (27 bridges here).

Denali County, AK · 27 bridges
Phillips County, CO · 27 bridges
Teller County, CO · 27 bridges
Baker County, GA · 27 bridges

Similar average build year

Nearest mean year-built outside ND (1979 here).

Pima County, AZ · avg 1979 · 1,150 bridges
Jefferson County, KY · avg 1979 · 662 bridges
Spartanburg County, SC · avg 1979 · 638 bridges
McPherson County, KS · avg 1979 · 586 bridges

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

All 27 Good 16 Fair 8 Poor 3

All bridges (27)

Sort:

ND HIGHWAY 15

Fair

Over: CREEK

6 EAST OF US 281, Eddy, ND

Built 1932 Load: 19.1 t ADT: 290

COUNTY HIGHWAY

Fair

Over: JAMES RIVER

3 S 4 E NEW ROCKFORD, Eddy, ND

Built 1985 Load: 20.3 t ADT: 15

COUNTY HIGHWAY

Fair

Over: JAMES RIVER

5 WEST 3 NORTH NEW ROCKFD, Eddy, ND

Built 1970 Load: 21.9 t ADT: 70

IRRFT COUNTY HIWAY

Fair

Over: SHEYENNE RIVER

3 SOUTH WARWICK, Eddy, ND

Built 1959 Load: 25.5 t ADT: 100

COUNTY HIGHWAY

Fair

Over: SHEYENNE RIVER

7 WEST 1 SOUTH SHEYENNE, Eddy, ND

Built 1968 Load: 27.9 t ADT: 10

IRRFT COUNTY HIWAY

Fair

Over: SHEYENNE RIVER

18 E 4 N NEW ROCKFORD, Eddy, ND

Built 1980 Load: 28.4 t ADT: 10

IRRFT COUNTY HIWAY

Fair

Over: SHEYENNE RIVER

8 EAST SHEYENNE, Eddy, ND

Built 1975 Load: 31.7 t ADT: 210

COUNTY HIGHWAY

Fair

Over: SHEYENNE RIVER

4 WEST SHEYENNE, Eddy, ND

Eddy County Bridge Snapshot

Condition distribution

Eddy County's Poor-condition bridges carry 65 vehicle crossings a day

25.9% of Eddy County's bridges have passed the 50-year mark

One structure carries 76.9% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (27)

ND HIGHWAY 15

COUNTY HIGHWAY

COUNTY HIGHWAY

IRRFT COUNTY HIWAY

COUNTY HIGHWAY

IRRFT COUNTY HIWAY

IRRFT COUNTY HIWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

US HIGHWAY

COUNTY HIGHWAY

US HIGHWAY 281

RRV&W Railroad

COUNTY HIGHWAY

COUNTY HIGHWAY

US HIGHWAY 281

IRRFT US HIWAY 281

COUNTY HIGHWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

COUNTY HIGHWAY

IRRFT ND HIWAY 20

US HIGHWAY 281

COUNTY HIGHWAY

IRRFT COUNTY HIWAY

COUNTY HIGHWAY

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