County profile · official public datasets

Greenlee County, AZ

90 public highway bridges tracked in the FHWA National Bridge Inventory: 43.3% rated Good, 52.2% Fair, 4.4% Poor.

90
Public bridges: 43.3%
Good condition: 4.4%
Poor condition

The verdict

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

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

14th
of 15 on Poor share: 4.4%
Poor-condition share: 90
public highway bridges: 1958
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.

Greenlee County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Greenlee County ranks #14 of 15 Arizona counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.4%). Greenlee County, Arizona contains 90 public highway bridges. Roughly 43.3% are rated “Good,” 52.2% “Fair,” and 4.4% “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 Greenlee County

Good condition

43.3%

39 of 90 rated 7-9

Fair condition

52.2%

47 of 90 rated 5-6

Poor condition

4.4%

4 of 90 rated 4 or below

In-state Poor-share rank

#14 of 15

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

Condition distribution

Share of 90 NBI-tracked bridges by lowest applicable component rating.

Good

43.3% (39)

Fair

52.2% (47)

Poor

4.4% (4)

Greenlee County's Poor-condition bridges carry 2,406 vehicle crossings a day

That is 1.6% of the county's reported daily bridge traffic on 4.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 602 crossings a day against 2,139 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 90 of 90 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

74.4% of Greenlee County's bridges have passed the 50-year mark

67 of the 90 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 43.3% 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 43.6% of the county's Poor-condition bridge traffic

US 191;FAU 9512 over Industrial Plant; FAS 21, built 1943, carries 1,048 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 4-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,406 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

4
1910s

5
1920s

2
1930s

7
1940s

16
1950s

17
1960s

16
1980s

10
1990s

2
2000s

7
2010s

4

What this shows Construction peaked in the 1950s, when 17 of the county's bridges still in the inventory were built, which is 18.9% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year is 1958, 19 years older than the Arizona average of 1977.

How Greenlee County compares with Arizona's closest counties by inventory size

The 5 Arizona counties nearest Greenlee County in number of bridges, with their condition splits. Its 4.4% Poor share is the 5th-lowest of these 6. Its average build year of 1958 against a peer-group mean of 1968 is 10 years older.

Showing the 5 closest of 14 Arizona counties eligible for comparison.

Bridge inventory size and condition shares for Greenlee County and the 5 Arizona counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Yuma County	262	50.4%	47.7%	1.9%	1973
Apache County	259	48.3%	45.9%	5.8%	1973
Gila County	259	60.2%	37.5%	2.3%	1975
Graham County	179	44.1%	52%	3.9%	1954
Santa Cruz County	138	55.8%	42.8%	1.4%	1966
Greenlee County (this page)	90	43.3%	52.2%	4.4%	1958

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

Similar inventory size

Nearest county inventories outside AZ (90 bridges here).

Clay County, FL · 90 bridges
Taylor County, FL · 90 bridges
Monroe County, GA · 90 bridges
Kauai County, HI · 90 bridges

Similar average build year

Nearest mean year-built outside AZ (1958 here).

Middlesex County, MA · avg 1958 · 818 bridges
Bucks County, PA · avg 1958 · 699 bridges
Butte County, CA · avg 1958 · 437 bridges
Cowley County, KS · avg 1958 · 337 bridges

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

All 90 Good 39 Fair 47 Poor 4

Fair-condition bridges (47)

Sort:

Greenlee County Bridge Snapshot

Condition distribution

Greenlee County's Poor-condition bridges carry 2,406 vehicle crossings a day

74.4% of Greenlee County's bridges have passed the 50-year mark

One structure carries 43.6% of the county's Poor-condition bridge traffic

How Greenlee County compares with Arizona'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 (47)

Zorrilla Street

Comb Street

FDR 232

US 191

US 191 SB

BHBCB

BHBCB

Blue Riv Rd-FR 281

City Parking Lot

US 191 NB

Fairgrounds Rd

Steven Loop

Steven Loop

Steven Loop

SR 75

SR 75

Virden Hwy

Chase Creek Rd

SR 75

US 70

SR 75

SR 75

SR 75

Carrell Loop

Blue Riv Rd-FR 281

SR 75

US 70

US 191 NB

Blue Riv Rd-FR 281

Blue Riv Rd-FR 281

Blue Riv Rd-FR 281

US 191 NB

Ward Canyon Road

Blue Riv Rd-FR 281

Blue Riv Rd-FR 281

Blue Riv Rd-FR 281

BHBCB

US 191 T

US 191 NB

BHBCB

SR 75

US 70

SR 75

SR 75

SR 75

SR 75

Cosper Loop

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