County profile · official public datasets

Emery County, UT

126 public highway bridges tracked in the FHWA National Bridge Inventory: 18.3% rated Good, 81% Fair, 0.8% Poor.

126
Public bridges: 18.3%
Good condition: 0.8%
Poor condition

The verdict

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

Emery County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 31%
lowest Poor share in state: 0.8%
Poor-condition share: 126
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.

Emery County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Emery County ranks #9 of 29 Utah counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.8%). Emery County, Utah contains 126 public highway bridges. Roughly 18.3% are rated “Good,” 81% “Fair,” and 0.8% “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

126

Public highway bridges in Emery County

Good condition

18.3%

23 of 126 rated 7-9

Fair condition

81%

102 of 126 rated 5-6

Poor condition

0.8%

1 of 126 rated 4 or below

In-state Poor-share rank

#9 of 29

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

Condition distribution

Share of 126 NBI-tracked bridges by lowest applicable component rating.

Good

18.3% (23)

Fair

81% (102)

Poor

0.8% (1)

Emery County's Poor-condition bridges carry 50 vehicle crossings a day

That is 0% of the county's reported daily bridge traffic on 0.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 50 crossings a day against 2,628 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 120 of 126 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

41.3% of Emery County's bridges have passed the 50-year mark

52 of the 126 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 18.3% 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 100% of the county's Poor-condition bridge traffic

NO DATA ENTERED over HUNTINGTON CREEK, built 1981, 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 1-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 50 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1940s

3
1950s

7
1960s

28
1970s

26
1980s

35
1990s

20
2000s

4
2010s

2
2020s

1

What this shows Construction peaked in the 1980s, when 35 of the county's bridges still in the inventory were built, which is 27.8% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1979, 5 years older than the Utah average of 1984.

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

The 5 Utah counties nearest Emery County in number of bridges, with their condition splits. Its 0.8% Poor share is the 4th-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1983 is in line with the group.

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

Bridge inventory size and condition shares for Emery County and the 5 Utah counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Sevier County	157	19.1%	80.3%	0.6%	1983
Davis County	139	28.8%	70.5%	0.7%	1996
Summit County	138	14.5%	81.2%	4.3%	1982
Weber County	129	14.7%	80.6%	4.7%	1979
Emery County (this page)	126	18.3%	81%	0.8%	1979
Grand County	121	18.2%	81.8%	0%	1973

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

Similar inventory size

Nearest county inventories outside UT (126 bridges here).

Bibb County, AL · 126 bridges
Coosa County, AL · 126 bridges
Lawrence County, AR · 126 bridges
Coffee County, GA · 126 bridges

Similar average build year

Nearest mean year-built outside UT (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 126 Good 23 Fair 102 Poor 1

All bridges (126)

Sort:

Emery County Bridge Snapshot

Condition distribution

Emery County's Poor-condition bridges carry 50 vehicle crossings a day

41.3% of Emery County's bridges have passed the 50-year mark

One structure carries 100% of the county's Poor-condition bridge traffic

How Emery 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 (126)

INTERCHANGE X-ROAD

I-70 (SR-70) WBL

COUNTY ROAD

SR-24

SR-24

CITY ST. 400 W.ST.

COUNTY ROAD

SR-57

I-70 (SR-70) EBL

I-70 (SR-70) EBL

COUNTY ROAD

I-70 (SR-70) EB

US-6 (SR-6)

I-70 (SR-70) EBL

COUNTY ROAD

I-70 (SR-70) WBL

COUNTY ROAD

INTERCHANGE X-ROAD

I-70 (SR-70) EBL

I-70 (SR-70 EBL)

I-70 (SR-70) WBL

I-70 (SR-70) EB

US-6 (SR-6)

SR-29

SR-31

I-70 (SR-70) EB

SR-31

SR-19

I-70EB & EB OF

I-70 (SR-70) WBL

I-70 (SR-70)

SR-31

I-70 (SR-70) WBL

NO DATA ENTERED

CO.RD.TO BUCKHORN

US-6 (SR-6)

CO.RD. INT. X-RD.

COUNTY ROAD

US-6 (SR-6)

SR-10

CO.RD. INT. X-RD.

SR-10

I-70 (SR-70) WB

I-70 (SR-70)

US-6 (SR-6)

SR-10

COUNTY ROAD

COUNTY ROAD

CITY ROAD

I-70 (SR-70)

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