Total bridges
10
Public highway bridges in Kidder County
County profile · official public datasets
Kidder County, ND
10 public highway bridges tracked in the FHWA National Bridge Inventory: 10% rated Good, 90% Fair, 0% Poor.
- 10
- Public bridges
- 10%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Kidder County pairs a top-10% lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 9%
- lowest Poor share in state
- 0%
- Poor-condition share
- 10
- public highway bridges
- 1962
- 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.
Kidder County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Kidder County ranks #5 of 53 North Dakota counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Kidder County, North Dakota contains 10 public highway bridges. Roughly 10% are rated “Good,” 90% “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.
Good condition
10%
1 of 10 rated 7-9
Fair condition
90%
9 of 10 rated 5-6
Poor condition
0%
0 of 10 rated 4 or below
In-state Poor-share rank
#5 of 53
Among North Dakota counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 10 NBI-tracked bridges by lowest applicable component rating.
Good 10% (1)
Fair 90% (9)
Poor 0% (0)
100% of Kidder County's bridges have passed the 50-year mark
10 of the 10 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 10% 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.
When Kidder County's bridges were built
10 bridges with a recorded construction year, grouped by decade
- 1950s
1950–1959
5 bridges
- 1960s
1960–1969
5 bridges
What this shows Construction peaked in the 1950s, when 5 of the county's bridges still in the inventory were built, which is 50% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year is 1962, 13 years older than the North Dakota average of 1975.
How Kidder County compares with North Dakota's closest counties by inventory size
The 5 North Dakota counties nearest Kidder County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1962 against a peer-group mean of 1970 is 8 years older.
Showing the 5 closest of 52 North Dakota counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Divide County | 13 | 30.8% | 61.5% | 7.7% | 1975 |
| Logan County | 13 | 61.5% | 23.1% | 15.4% | 1973 |
| McIntosh County | 11 | 45.5% | 45.5% | 9.1% | 1973 |
| Kidder County (this page) | 10 | 10% | 90% | 0% | 1962 |
| Sheridan County | 8 | 87.5% | 12.5% | 0% | 1974 |
| Pierce County | 5 | 60% | 20% | 20% | 1956 |
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 Kidder 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 Kidder County, both outside North Dakota so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside ND (10 bridges here).
- Lake and Peninsula County, AK · 10 bridges
- Gilchrist County, FL · 10 bridges
- Storey County, NV · 10 bridges
- Lea County, NM · 10 bridges
Similar average build year
Nearest mean year-built outside ND (1962 here).
- Berks County, PA · avg 1962 · 667 bridges
- Pecos County, TX · avg 1962 · 470 bridges
- Bristol County, MA · avg 1962 · 384 bridges
- Norfolk County, MA · avg 1962 · 343 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (10)
COUNTY HIGHWAY
FairOver: I 94/PETTIBONE INTERCHG
8 EAST OF ND 3 SOUTH, Kidder, ND
Built 1958 Load: 25.7 t ADT: 100
COUNTY HIGHWAY
FairOver: I 94-TAPPEN INTERCHANGE
5 EAST OF ND 3 SOUTH, Kidder, ND
Built 1958 Load: 28.9 t ADT: 250
COUNTY HIGHWAY
FairOver: I 94-CRYSTAL SPRINGS INT
7 WEST OF ND 30, Kidder, ND
Built 1958 Load: 29.7 t ADT: 130
INTERSTATE 94
FairOver: BN RAILROAD SEPARATION
6 WEST OF ND 30, Kidder, ND
Built 1958 Load: 39.0 t ADT: 3,150
INTERSTATE 94
FairOver: BN RAILROAD SEPARATION
6 WEST OF ND 30, Kidder, ND
Built 1958 Load: 39.0 t ADT: 3,150
COUNTY HIGHWAY
FairOver: I94/ROBINSON INTERCHANGE
4 EAST OF ND 3 NORTH, Kidder, ND
Built 1966 Load: 57.0 t ADT: 80
COUNTY HIGHWAY
FairOver: I94/LONG LAKE INTER
6 WEST OF ND 3 NORTH, Kidder, ND
Built 1966 Load: 60.4 t ADT: 110
ND HIGHWAY 3 SOUTH
FairOver: I-94/DAWSON INTERCHANGE
JCT. ND 3 SOUTH, Kidder, ND
Built 1966 Load: 65.2 t ADT: 650
ND HIGHWAY 3
FairOver: I-94/STEELE INTERCHANGE
ND 3 & STEELE INTERCHANGE, Kidder, ND
Built 1966 Load: 65.7 t ADT: 700
COUNTY HIGHWAY
GoodOver: I94/WEBER LAKE SEP
4 WEST OF ND 3 NORTH, Kidder, ND
Built 1966 Load: 60.4 t ADT: 25
Read our methodology - how this data is sourced, computed, and verified.
Related
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.