Total bridges
52
Public highway bridges in Sanpete County
County profile · official public datasets
Sanpete County, UT
52 public highway bridges tracked in the FHWA National Bridge Inventory: 30.8% rated Good, 69.2% Fair, 0% Poor.
- 52
- Public bridges
- 30.8%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Sanpete County posts a top-10% lowest Poor-condition share among rated counties in the state across rated county bridge inventory.
- Top 7%
- lowest Poor share in state
- 0%
- Poor-condition share
- 52
- public highway bridges
- 1986
- 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.
Sanpete County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Sanpete County ranks #2 of 29 Utah counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Sanpete County, Utah contains 52 public highway bridges. Roughly 30.8% are rated “Good,” 69.2% “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
30.8%
16 of 52 rated 7-9
Fair condition
69.2%
36 of 52 rated 5-6
Poor condition
0%
0 of 52 rated 4 or below
In-state Poor-share rank
#2 of 29
Among Utah counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 52 NBI-tracked bridges by lowest applicable component rating.
Good 30.8% (16)
Fair 69.2% (36)
Poor 0% (0)
15.4% of Sanpete County's bridges have passed the 50-year mark
8 of the 52 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.
When Sanpete County's bridges were built
52 bridges with a recorded construction year, grouped by decade
- 1930s 3
1930–1939
3 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 1
1950–1959
1 bridges
- 1960s 2
1960–1969
2 bridges
- 1970s 4
1970–1979
4 bridges
- 1980s
1980–1989
22 bridges
- 1990s 3
1990–1999
3 bridges
- 2000s
2000–2009
15 bridges
- 2010s 1
2010–2019
1 bridges
What this shows Construction peaked in the 1980s, when 22 of the county's bridges still in the inventory were built, which is 42.3% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1986) matches the Utah average (1984).
How Sanpete County compares with Utah's closest counties by inventory size
The 5 Utah counties nearest Sanpete 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 1986 against a peer-group mean of 1975 is 11 years newer.
Showing the 5 closest of 28 Utah counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Juab County | 60 | 8.3% | 88.3% | 3.3% | 1980 |
| Beaver County | 53 | 17% | 79.2% | 3.8% | 1977 |
| Morgan County | 53 | 0% | 96.2% | 3.8% | 1967 |
| Sanpete County (this page) | 52 | 30.8% | 69.2% | 0% | 1986 |
| San Juan County | 50 | 24% | 74% | 2% | 1974 |
| Tooele County | 35 | 17.1% | 82.9% | 0% | 1979 |
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 Sanpete 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 Sanpete County, both outside Utah so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside UT (52 bridges here).
- Copper River County, AK · 52 bridges
- McDuffie County, GA · 52 bridges
- Terrell County, GA · 52 bridges
- Tensas County, LA · 52 bridges
Similar average build year
Nearest mean year-built outside UT (1986 here).
- El Paso County, TX · avg 1986 · 783 bridges
- Caddo County, LA · avg 1986 · 682 bridges
- Weld County, CO · avg 1986 · 614 bridges
- Polk County, IA · avg 1986 · 545 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (52)
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.