County profile · official public datasets

Alamance County, NC

244 public highway bridges tracked in the FHWA National Bridge Inventory: 48.4% rated Good, 46.7% Fair, 4.9% Poor.

244
Public bridges: 48.4%
Good condition: 4.9%
Poor condition

The verdict

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

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

53rd
of 100 on Poor share: 4.9%
Poor-condition share: 244
public highway bridges: 1987
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.

Alamance County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Alamance County ranks #53 of 100 North Carolina counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.9%). Alamance County, North Carolina contains 244 public highway bridges. Roughly 48.4% are rated “Good,” 46.7% “Fair,” and 4.9% “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

244

Public highway bridges in Alamance County

Good condition

48.4%

118 of 244 rated 7-9

Fair condition

46.7%

114 of 244 rated 5-6

Poor condition

4.9%

12 of 244 rated 4 or below

In-state Poor-share rank

#53 of 100

Among North Carolina counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 244 NBI-tracked bridges by lowest applicable component rating.

Good

48.4% (118)

Fair

46.7% (114)

Poor

4.9% (12)

Alamance County's Poor-condition bridges carry 31,775 vehicle crossings a day

That is 1.8% of the county's reported daily bridge traffic on 4.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,648 crossings a day against 5,910 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 244 of 244 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

31.1% of Alamance County's bridges have passed the 50-year mark

76 of the 244 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 48.4% 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 50.4% of the county's Poor-condition bridge traffic

SR1928 over SOUTHERN R.R., built 1972, carries 16,000 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 12-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 31,775 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

3
1930s

12
1940s

2
1950s

27
1960s

20
1970s

18
1980s

21
1990s

50
2000s

41
2010s

38
2020s

12

What this shows Construction peaked in the 1990s, when 50 of the county's bridges still in the inventory were built, which is 20.5% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1987) matches the North Carolina average (1986).

How Alamance County compares with North Carolina's closest counties by inventory size

The 5 North Carolina counties nearest Alamance County in number of bridges, with their condition splits. Its 4.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1987 against a peer-group mean of 1983 is in line with the group.

Showing the 5 closest of 99 North Carolina counties eligible for comparison.

Bridge inventory size and condition shares for Alamance County and the 5 North Carolina counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Ashe County	247	33.6%	41.7%	24.7%	1984
Henderson County	245	35.5%	55.5%	9%	1979
Rowan County	245	55.5%	42.4%	2%	1993
Madison County	244	33.2%	45.1%	21.7%	1975
Alamance County (this page)	244	48.4%	46.7%	4.9%	1987
Chatham County	241	42.7%	55.2%	2.1%	1983

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 Alamance 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 Alamance County, both outside North Carolina so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside NC (244 bridges here).

Spencer County, IN · 244 bridges
Norton County, KS · 244 bridges
Osborne County, KS · 244 bridges
Allegan County, MI · 244 bridges

Similar average build year

Nearest mean year-built outside NC (1987 here).

St. Louis County, MO · avg 1987 · 912 bridges
Ellis County, TX · avg 1987 · 691 bridges
St. Louis County, MN · avg 1987 · 663 bridges
Palm Beach County, FL · avg 1987 · 610 bridges

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

All 244 Good 118 Fair 114 Poor 12

Fair-condition bridges (114)

Sort:

Alamance County Bridge Snapshot

Condition distribution

Alamance County's Poor-condition bridges carry 31,775 vehicle crossings a day

31.1% of Alamance County's bridges have passed the 50-year mark

One structure carries 50.4% of the county's Poor-condition bridge traffic

How Alamance County compares with North Carolina'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 (114)

SR1712

US70W

WOODLAND AVE

SR2146

SR1363

BOONE STATION DR.

BOONE STATION DR.

LANG STREET

NC87

SR2116

I40 I85 SR1398

NC49

I40 I85

NC62

SR1154

SR1154

I40 I85

SR2171

SR1921

SR1158

SR1148

US70

BONNAR BRG.PKWY

SR2171

NC54

I40 I85

SR1763

SR1940

SR2158

SR1158

US70W

SR1700

SR1226

SR2100

NC87

SR1587

NC54

SR1005

NC54

SR1945

SR2389

SR2135

SR1584

SR2153

SR1920

I40 I85 SR1167

NC49

NC62

I40 I85

NC87

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