County profile · official public datasets

Humphreys County, TN

250 public highway bridges tracked in the FHWA National Bridge Inventory: 24.4% rated Good, 68% Fair, 7.6% Poor.

250
Public bridges: 24.4%
Good condition: 7.6%
Poor condition

The verdict

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

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

83rd
of 95 on Poor share: 7.6%
Poor-condition share: 250
public highway bridges: 1978
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.

Humphreys County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Humphreys County ranks #83 of 95 Tennessee counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.6%). Humphreys County, Tennessee contains 250 public highway bridges. Roughly 24.4% are rated “Good,” 68% “Fair,” and 7.6% “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

250

Public highway bridges in Humphreys County

Good condition

24.4%

61 of 250 rated 7-9

Fair condition

68%

170 of 250 rated 5-6

Poor condition

7.6%

19 of 250 rated 4 or below

In-state Poor-share rank

#83 of 95

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

Condition distribution

Share of 250 NBI-tracked bridges by lowest applicable component rating.

Good

24.4% (61)

Fair

68% (170)

Poor

7.6% (19)

Humphreys County's Poor-condition bridges carry 22,440 vehicle crossings a day

That is 3.2% of the county's reported daily bridge traffic on 7.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,181 crossings a day against 2,247 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 250 of 250 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

37.2% of Humphreys County's bridges have passed the 50-year mark

93 of the 250 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 24.4% 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 35.7% of the county's Poor-condition bridge traffic

FAP 1 over TRACE CREEK, built 1959, carries 8,019 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 19-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 22,440 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

6
1930s

10
1940s

10
1950s

23
1960s

36
1970s

30
1980s

76
1990s

18
2000s

25
2010s

11
2020s

5

What this shows Construction peaked in the 1980s, when 76 of the county's bridges still in the inventory were built, which is 30.4% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1978) matches the Tennessee average (1977).

How Humphreys County compares with Tennessee's closest counties by inventory size

The 5 Tennessee counties nearest Humphreys County in number of bridges, with their condition splits. Its 7.6% Poor share is the 6th-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1977 is in line with the group.

Showing the 5 closest of 94 Tennessee counties eligible for comparison.

Bridge inventory size and condition shares for Humphreys County and the 5 Tennessee counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Lauderdale County	258	36%	57.4%	6.6%	1985
Humphreys County (this page)	250	24.4%	68%	7.6%	1978
Dickson County	243	58.8%	35.8%	5.3%	1975
Haywood County	241	35.3%	60.2%	4.6%	1976
Carroll County	240	37.9%	60%	2.1%	1982
Marshall County	240	56.3%	43.8%	0%	1968

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

Similar inventory size

Nearest county inventories outside TN (250 bridges here).

Escambia County, FL · 250 bridges
Scotts Bluff County, NE · 250 bridges
Morrow County, OH · 250 bridges
Hopkins County, TX · 250 bridges

Similar average build year

Nearest mean year-built outside TN (1978 here).

Orange County, CA · avg 1978 · 1,164 bridges
Sumner County, KS · avg 1978 · 659 bridges
Allen County, IN · avg 1978 · 613 bridges
Livingston County, IL · avg 1978 · 579 bridges

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

All 250 Good 61 Fair 170 Poor 19

Fair-condition bridges (170)

Sort:

Humphreys County Bridge Snapshot

Condition distribution

Humphreys County's Poor-condition bridges carry 22,440 vehicle crossings a day

37.2% of Humphreys County's bridges have passed the 50-year mark

One structure carries 35.7% of the county's Poor-condition bridge traffic

How Humphreys County compares with Tennessee'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 (170)

I40

BLUE CREEK RD.

NFA 1779

NFA 1781 (SA 4311)

NFA 1781 (SA 4311)

NFA 1794

NFA 1794

NFA 1796 (SA 4304)

NFA 1802 (SA 4313)

NFA 1806 (SA 4312)

NFA 1808

NFA 1814

NFA 1814

NFA 1814

NFA 1818 (SA 4307)

NFA A001

NFA A001

NFA A004

NFA A004

NFA A015

NFA A020

NFA A022

NFA A039

NFA A039

NFA A043

NFA A043

NFA A046

NFA A049

NFA A050

NFA A055

NFA A055

NFA A070

NFA A082

NFA A124

NFA A129

NFA A129

NFA A130

NFA A138

NFA A145

NFA A145

NFA A150

NFA A150

NFA A151

NFA A166

NFA A166

NFA A170

NFA A171

NFA A195

NFA A204

NFA A204

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