County profile · official public datasets

Cannon County, TN

159 public highway bridges tracked in the FHWA National Bridge Inventory: 45.9% rated Good, 43.4% Fair, 10.7% Poor.

159
Public bridges: 45.9%
Good condition: 10.7%
Poor condition

The verdict

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

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

91st
of 95 on Poor share: 10.7%
Poor-condition share: 159
public highway bridges: 1974
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.

Cannon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cannon County ranks #91 of 95 Tennessee counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.7%). Cannon County, Tennessee contains 159 public highway bridges. Roughly 45.9% are rated “Good,” 43.4% “Fair,” and 10.7% “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

159

Public highway bridges in Cannon County

Good condition

45.9%

73 of 159 rated 7-9

Fair condition

43.4%

69 of 159 rated 5-6

Poor condition

10.7%

17 of 159 rated 4 or below

In-state Poor-share rank

#91 of 95

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

Condition distribution

Share of 159 NBI-tracked bridges by lowest applicable component rating.

Good

45.9% (73)

Fair

43.4% (69)

Poor

10.7% (17)

Cannon County's Poor-condition bridges carry 25,836 vehicle crossings a day

That is 12.5% of the county's reported daily bridge traffic on 10.7% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,520 crossings a day against 1,235 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 159 of 159 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

43.4% of Cannon County's bridges have passed the 50-year mark

69 of the 159 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 45.9% 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 56.6% of the county's Poor-condition bridge traffic

FAP 1 over EAST FORK STONES RIVER, built 1924, carries 14,614 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 17-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 25,836 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

11
1930s

9
1940s

8
1950s

16
1960s

23
1970s

6
1980s

42
1990s

18
2000s

10
2010s

12
2020s

4

What this shows Construction peaked in the 1980s, when 42 of the county's bridges still in the inventory were built, which is 26.4% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1974) matches the Tennessee average (1977).

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

The 5 Tennessee counties nearest Cannon County in number of bridges, with their condition splits. Its 10.7% Poor share is the 6th-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1978 is in line with the group.

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

Bridge inventory size and condition shares for Cannon County and the 5 Tennessee counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Unicoi County	161	46%	49.1%	5%	1984
Warren County	160	48.1%	48.1%	3.8%	1976
Roane County	159	48.4%	49.7%	1.9%	1972
Cannon County (this page)	159	45.9%	43.4%	10.7%	1974
Franklin County	157	42.7%	53.5%	3.8%	1980
Perry County	153	23.5%	75.2%	1.3%	1979

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

Similar inventory size

Nearest county inventories outside TN (159 bridges here).

Franklin County, IN · 159 bridges
Decatur County, KS · 159 bridges
Cheyenne County, NE · 159 bridges
Morgan County, OH · 159 bridges

Similar average build year

Nearest mean year-built outside TN (1974 here).

Summit County, OH · avg 1974 · 563 bridges
Onondaga County, NY · avg 1974 · 472 bridges
Orange County, NY · avg 1974 · 472 bridges
Pierce County, WA · avg 1974 · 472 bridges

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

All 159 Good 73 Fair 69 Poor 17

All bridges (159)

Sort:

NFA A220

Fair

Over: BRAWLEYS FORK CREEK

4MI SOUTH OF SR1, Cannon, TN

Built 1984 Load: 32.4 t ADT: 170

NFA A223

Fair

Over: BRAWLEYS FORK CREEK

1MI SOUTH OF SR1, Cannon, TN

Built 1984 Load: 32.4 t ADT: 150

NFA A225 (SA 0818)

Fair

Over: HOLLIS CREEK

.5 MI SOUTH OF SR1, Cannon, TN

Built 1986 Load: 32.4 t ADT: 160

NFA A229 (SA 0818)

Fair

Over: BRANCH

2MI SOUTH OF SR1, Cannon, TN

Built 1997 Load: 32.4 t ADT: 290

NFA 1114 (SA 0801)

Fair

Over: SHELTON BRANCH

5MI NORTH OF COFFEE CO., Cannon, TN

Built 1985 Load: 32.4 t ADT: 299

FAS 64

Fair

Over: SHELTON BRANCH

4MI.N.E.OF COFFEE CO.LINE, Cannon, TN

Built 1985 Load: 32.4 t ADT: 559

NFA 1125 (SA 0807)

Fair

Over: ANDREWS CREEK

4MI NORTH OF SR1, Cannon, TN

Built 1976 Load: 32.4 t ADT: 583

NFA 2145 (SA 0809)

Fair

Over: DOOLITTLE BRANCH

NEAR W00DBURY, Cannon, TN

Built 1986 Load: 32.4 t ADT: 813

FAP 1

Fair

Over: CARSON FORK CREEK

2 M WEST OF WOODBURY, Cannon, TN

Built 1987 Load: 32.4 t ADT: 12,928

FAP 1

Fair

Over: CARSON FORK CREEK

2 M WEST OF WOODBURY, Cannon, TN

Built 1987 Load: 32.4 t ADT: 12,928

FAP 1

Fair

Over: SMALL BRANCH

1.6 M WEST OF WOODBURY, Cannon, TN

Built 1988 Load: 32.4 t ADT: 12,579

FAP 1

Fair

Over: RUSH CREEK

.5 M WEST OF WOODBURY, Cannon, TN

Built 1987 Load: 32.4 t ADT: 12,579

FAP 53

Fair

Over: DUKE CREEK

1.5MI.S.OFCOFFEE CO.LINE, Cannon, TN

Built 1994 Load: 32.4 t ADT: 3,790

FAP 53

Fair

Over: EAST FORK STONES RIVER

NEAR WOODBURY, Cannon, TN

Built 1952 Load: 32.4 t ADT: 1,230

FAP 53

Fair

Over: CONNELL CREEK

NEAR WOODBURY, Cannon, TN

Built 1932 Load: 32.4 t ADT: 776

FAP 96

Fair

Over: LEACH CREEK

1.6 MI.E.OF RUTHERFORD CO, Cannon, TN

Built 1979 Load: 32.4 t ADT: 4,051

FAS 145

Fair

Over: SANDERS FORK CREEK

4.7 MI.NORTH OF WOODBURY, Cannon, TN

Built 1999 Load: 32.4 t ADT: 945

NFA 2143

Fair

Over: NFA 2143 / SR145

3 MI N. OF WOODBURG TN., Cannon, TN

Built 1988 Load: 32.4 t ADT: 401

NFA 1119 (SA 0805)

Fair

Over: YOUNGBLOOD CREEK

.2MI WEST OF US70S, Cannon, TN

Cannon County Bridge Snapshot

Condition distribution

Cannon County's Poor-condition bridges carry 25,836 vehicle crossings a day

43.4% of Cannon County's bridges have passed the 50-year mark

One structure carries 56.6% of the county's Poor-condition bridge traffic

How Cannon 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

All bridges (159)

NFA A220

NFA A223

NFA A225 (SA 0818)

NFA A229 (SA 0818)

NFA 1114 (SA 0801)

FAS 64

NFA 1125 (SA 0807)

NFA 2145 (SA 0809)

FAP 1

FAP 1

FAP 1

FAP 1

FAP 53

FAP 53

FAP 53

FAP 96

FAS 145

NFA 2143

NFA 1119 (SA 0805)

NFA A181

NFA A090

NFA 2151 (SA 0814)

NFA A425

NFA A020

NFA A237

FAS 64

NFA A316

NFA A124 (SA 0819)

FAS 145

NFA A059

NFA A061

FAP 96

NFA A054 (SA 0817)

FAS 146

FAP 1

NFA 2147 (SA 0810)

FAS 145

FAS 146

FAS 146

NFA 1119 (SA 0805)

NFA 2143

NFA 2143

NFA 2151 (SA 0814)

NFA 2151 (SA 0814)

NFA 2151 (SA 0814)

NFA A034

NFA A059

NFA A070

NFA A102

NFA A109

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