County profile · official public datasets

Juab County, UT

60 public highway bridges tracked in the FHWA National Bridge Inventory: 8.3% rated Good, 88.3% Fair, 3.3% Poor.

60
Public bridges: 8.3%
Good condition: 3.3%
Poor condition

The verdict

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

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

19th
of 29 on Poor share: 3.3%
Poor-condition share: 60
public highway bridges: 1980
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.

Juab County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Juab County ranks #19 of 29 Utah counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.3%). Juab County, Utah contains 60 public highway bridges. Roughly 8.3% are rated “Good,” 88.3% “Fair,” and 3.3% “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 Juab County

Good condition

8.3%

5 of 60 rated 7-9

Fair condition

88.3%

53 of 60 rated 5-6

Poor condition

3.3%

2 of 60 rated 4 or below

In-state Poor-share rank

#19 of 29

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

Condition distribution

Share of 60 NBI-tracked bridges by lowest applicable component rating.

Good

8.3% (5)

Fair

88.3% (53)

Poor

3.3% (2)

Juab County's Poor-condition bridges carry 41,503 vehicle crossings a day

That is 3% of the county's reported daily bridge traffic on 3.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 20,752 crossings a day against 1,001 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 59 of 60 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

25% of Juab County's bridges have passed the 50-year mark

15 of the 60 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 8.3% 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 82.3% of the county's Poor-condition bridge traffic

I-15 (SR-15) NBL over DEER CROSSING, built 1984, carries 34,167 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 2-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 41,503 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

1
1940s

1
1950s

2
1970s

13
1980s

40
1990s

1
2000s

1
2010s

1

What this shows Construction peaked in the 1980s, when 40 of the county's bridges still in the inventory were built, which is 66.7% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1980) matches the Utah average (1984).

How Juab County compares with Utah's closest counties by inventory size

The 5 Utah counties nearest Juab County in number of bridges, with their condition splits. Its 3.3% Poor share is the 4th-lowest of these 6. Its average build year of 1980 against a peer-group mean of 1976 is in line with the group.

Showing the 5 closest of 28 Utah counties eligible for comparison.

Bridge inventory size and condition shares for Juab County and the 5 Utah counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Iron County	70	10%	88.6%	1.4%	1977
Juab County (this page)	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	52	30.8%	69.2%	0%	1986
San Juan County	50	24%	74%	2%	1974

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

Similar inventory size

Nearest county inventories outside UT (60 bridges here).

Hamilton County, FL · 60 bridges
Hernando County, FL · 60 bridges
Madison County, FL · 60 bridges
Heard County, GA · 60 bridges

Similar average build year

Nearest mean year-built outside UT (1980 here).

Tulsa County, OK · avg 1980 · 1,135 bridges
Miami-Dade County, FL · avg 1980 · 1,057 bridges
Pulaski County, AR · avg 1980 · 721 bridges
McLennan County, TX · avg 1980 · 714 bridges

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

All 60 Good 5 Fair 53 Poor 2

All bridges (60)

Sort:

Juab County Bridge Snapshot

Condition distribution

Juab County's Poor-condition bridges carry 41,503 vehicle crossings a day

25% of Juab County's bridges have passed the 50-year mark

One structure carries 82.3% of the county's Poor-condition bridge traffic

How Juab County compares with Utah'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 (60)

I-15 (SR-15)

NO DATA ENTERED

COUNTY FRONTAGE RD

SR-28

SR-132

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) SBL

COUNTY ROAD

I-15 (SR-15) NBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

50 EAST

I-15 (SR-15)

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

COUNTY ROAD

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) NBL

I-15 NB.OFF-RAMP

CO.RD.INTCHG.X-RD.

SR-28

CO.RD. UP&L AC

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

SR-132

I-15 (SR-15) SBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) NBL

I-15 (SR-15) SBL

I-15 (SR-15) SBL

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