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.

When Emery County's bridges were built

126 bridges with a recorded construction year, grouped by decade

bridges

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.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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 Poor
Sevier County 157 0.6%
Davis County 139 0.7%
Summit County 138 4.3%
Weber County 129 4.7%
Emery County (this page) 126 0.8%
Grand County 121 0%

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).

Similar average build year

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

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

Good-condition bridges (23)

NO DATA ENTERED

Good

Over: BIRCH CREEK

FERRON CANYON, Emery, UT

Built 1988 ADT: 50

COUNTY ROAD

Good

Over: SAN RAFAEL RIVER

22 MI.SO.OF GREEN RIVER, Emery, UT

Built 1998 Load: 13.0 t ADT: 13

SR-24

Good

Over: IRON WASH

13 MI SOUTH OF JCT I-70, Emery, UT

Built 1967 Load: 29.8 t ADT: 781

US-6 (SR-6)

Good

Over: SMITH HILL WASH

3.6 MILES NORTH JCT.I-70, Emery, UT

Built 1969 Load: 30.8 t ADT: 6,619

ORANGEVIL.MAIN ST.

Good

Over: COTTONWOOD CREEK

170 N. MAIN ORANGEVILLE, Emery, UT

Built 1976 Load: 32.4 t ADT: 2,390

COUNTY ROAD

Good

Over: DOBIE WASH

2.5 MI.NO.OF GREEN RIVER, Emery, UT

Built 1980 Load: 33.0 t ADT: 68

COUNTY ROAD

Good

Over: HUNTINGTON CANAL

SOUTHWEST OF HUNTINGTON, Emery, UT

Built 2002 Load: 33.7 t ADT: 126

COUNTY ROAD

Good

Over: MUDDY CREEK

7 MI.S.OF S.SALT WASH INT, Emery, UT

Built 2023 Load: 35.6 t ADT: 3

SR-31

Good

Over: HUNTINGTON CREEK

18 MI. NW. OF HUNTINGTON, Emery, UT

Built 1975 Load: 37.6 t ADT: 584

SR-155

Good

Over: SAND WASH

IN CLEVELAND, Emery, UT

Built 1997 Load: 37.6 t ADT: 1,638

SR-10

Good

Over: POULSEN WASH

4.1 MILES SO. CASTLEDALE, Emery, UT

Built 1951 Load: 37.9 t ADT: 7,907

I-70 (SR-70) WBL

Good

Over: BITTER SEEP WASH

W. OF S. SALT WASH INTCHG, Emery, UT

Built 1989 Load: 40.2 t

SR-155

Good

Over: TIMOTHY WASH

3.3 MI NORTH OF CLEVELAND, Emery, UT

Built 1997 Load: 41.1 t ADT: 982

COUNTY ROAD

Good

Over: SAN RAFAEL RIVER

21 MI. SE. OF CASTLE DALE, Emery, UT

Built 1991 Load: 43.1 t ADT: 743

SR-10

Good

Over: FERRON CREEK

SOUTH SIDE OF FERRON, Emery, UT

Built 1991 Load: 47.0 t ADT: 4,505

SR-31

Good

Over: BROCKBANK HOLLOW WASH

3.0 MI. W. of HUNTINGTON, Emery, UT

Built 1993 Load: 47.3 t ADT: 7,096

CANYON ROAD

Good

Over: FERRON CREEK

800 WEST CANYON ROAD, Emery, UT

Built 2013 Load: 56.4 t ADT: 1,000

SR-31

Good

Over: CLEVELAND CANAL

3.3 MI.WEST OF HUNTINGTON, Emery, UT

Built 1973 Load: 59.6 t ADT: 7,096

SR-155

Good

Over: CEDAR CREEK

1 MI.EAST JCT.WITH SR-10, Emery, UT

Built 1997 Load: 63.5 t ADT: 1,966

SR-10

Good

Over: SOUTH WASH

1 MI.NO.of JCT.WITH SR-57, Emery, UT

Built 1987 Load: 77.8 t ADT: 5,419

SR-10

Good

Over: ROCK CANYON WASH

5 Mi. South of Castledale, Emery, UT

Built 2011 Load: 85.5 t ADT: 7,907

CO.FRONTAGE ROAD

Good

Over: CRAWFORD DRAW WASH

1 MILE W. SINBAD INTCHG., Emery, UT

Built 1987 Load: 96.6 t ADT: 743

COUNTY ROAD

Good

Over: HUNTINGTON CREEK

0.5 MILE EAST OF LAWRENCE, Emery, UT

Built 1985 Load: 96.6 t ADT: 180

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.