County profile · official public datasets

Tooele County, UT

35 public highway bridges tracked in the FHWA National Bridge Inventory: 17.1% rated Good, 82.9% Fair, 0% Poor.

35
Public bridges: 17.1%
Good condition: 0%
Poor condition

The verdict

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

Tooele 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 10%
lowest Poor share in state: 0%
Poor-condition share: 35
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.

Tooele County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Tooele County ranks #3 of 29 Utah counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Tooele County, Utah contains 35 public highway bridges. Roughly 17.1% are rated “Good,” 82.9% “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.

Total bridges

Public highway bridges in Tooele County

Good condition

17.1%

6 of 35 rated 7-9

Fair condition

82.9%

29 of 35 rated 5-6

Poor condition

0 of 35 rated 4 or below

In-state Poor-share rank

#3 of 29

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

Condition distribution

Share of 35 NBI-tracked bridges by lowest applicable component rating.

Good

17.1% (6)

Fair

82.9% (29)

Poor

0% (0)

62.9% of Tooele County's bridges have passed the 50-year mark

22 of the 35 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 17.1% 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.

1940s

2
1950s

2
1960s

1
1970s

19
1980s

3
1990s

3
2000s

1
2020s

4

What this shows Construction peaked in the 1970s, when 19 of the county's bridges still in the inventory were built, which is 54.3% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1979, 5 years older than the Utah average of 1984.

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

The 5 Utah counties nearest Tooele 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 1979 against a peer-group mean of 1974 is 5 years newer.

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

Bridge inventory size and condition shares for Tooele County and the 5 Utah counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
San Juan County	50	24%	74%	2%	1974
Tooele County (this page)	35	17.1%	82.9%	0%	1979
Wasatch County	32	18.8%	78.1%	3.1%	1989
Kane County	29	10.3%	89.7%	0%	1977
Wayne County	29	31%	58.6%	10.3%	1976
Rich County	20	15%	70%	15%	1955

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

Similar inventory size

Nearest county inventories outside UT (35 bridges here).

Seminole County, GA · 35 bridges
Manistee County, MI · 35 bridges
Toole County, MT · 35 bridges
Ransom County, ND · 35 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 35 Good 6 Fair 29 Poor 0

Fair-condition bridges (29)

Sort:

Tooele County Bridge Snapshot

Condition distribution

62.9% of Tooele County's bridges have passed the 50-year mark

How Tooele 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

Fair-condition bridges (29)

I-80 (SR-80) EBL

I-80 (SR-80) WBL

I-80 (SR-80) EBL

I-80 (SR-80) WBL

HARDY SALT ROAD

I-80 (SR-80) WBL

I-80 (SR-80) EBL

I-80 (SR-80) WBL

I-80 (SR-80) EBL

I-80 (SR-80) WBL

CLIVE INT. X-ROAD

CLIVE INT. X-ROAD

KNOLLS INT.X-RD.

KNOLLS INT.X-RD.

I-80 (SR-80) EBL

CO.RD. INTCHG.X-RD

I-80 (SR-80) EBL

I-80 (SR-80) WBL

I-80 (SR-80) EBL

I-80 (SR-80) WBL

CO.RD. INTCHG.X-RD

I-80 (SR-80) WBL

COUNTY ROAD

SR-36

WB RAMP TO SR-58

SR-201 EBL RAMP

SR-201 WBL ON-RAMP

I-80 (SR-80) EBL

I-80 (SR-80) WBL

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