Total bridges
208
Public highway bridges in Duplin County
County profile · official public datasets
Duplin County, NC
208 public highway bridges tracked in the FHWA National Bridge Inventory: 33.2% rated Good, 59.1% Fair, 7.7% Poor.
- 208
- Public bridges
- 33.2%
- Good condition
- 7.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Duplin County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 69th
- of 100 on Poor share
- 7.7%
- Poor-condition share
- 208
- public highway bridges
- 1988
- 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.
Duplin County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Duplin County ranks #69 of 100 North Carolina counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.7%). Duplin County, North Carolina contains 208 public highway bridges. Roughly 33.2% are rated “Good,” 59.1% “Fair,” and 7.7% “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.
Good condition
33.2%
69 of 208 rated 7-9
Fair condition
59.1%
123 of 208 rated 5-6
Poor condition
7.7%
16 of 208 rated 4 or below
In-state Poor-share rank
#69 of 100
Among North Carolina counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 208 NBI-tracked bridges by lowest applicable component rating.
Good 33.2% (69)
Fair 59.1% (123)
Poor 7.7% (16)
Duplin County's Poor-condition bridges carry 15,750 vehicle crossings a day
That is 3.3% of the county's reported daily bridge traffic on 7.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 984 crossings a day against 3,222 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 208 of 208 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
17.3% of Duplin County's bridges have passed the 50-year mark
36 of the 208 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 33.2% 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 27.9% of the county's Poor-condition bridge traffic
NC241 over LIMESTONE CREEK, built 1950, carries 4,400 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 16-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 15,750 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Duplin County's bridges were built
208 bridges with a recorded construction year, grouped by decade
- 1920s 6
1920–1929
6 bridges
- 1930s 2
1930–1939
2 bridges
- 1950s 8
1950–1959
8 bridges
- 1960s 14
1960–1969
14 bridges
- 1970s 16
1970–1979
16 bridges
- 1980s
1980–1989
59 bridges
- 1990s
1990–1999
47 bridges
- 2000s
2000–2009
26 bridges
- 2010s
2010–2019
24 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1980s, when 59 of the county's bridges still in the inventory were built, which is 28.4% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1988) matches the North Carolina average (1986).
How Duplin County compares with North Carolina's closest counties by inventory size
The 5 North Carolina counties nearest Duplin County in number of bridges, with their condition splits. Its 7.7% Poor share is the 4th-lowest of these 6. Its average build year of 1988 against a peer-group mean of 1987 is in line with the group.
Showing the 5 closest of 99 North Carolina counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Wayne County | 208 | 43.8% | 51.9% | 4.3% | 1991 |
| Duplin County (this page) | 208 | 33.2% | 59.1% | 7.7% | 1988 |
| Caldwell County | 201 | 35.8% | 55.7% | 8.5% | 1983 |
| Watauga County | 200 | 43.5% | 47% | 9.5% | 1984 |
| Sampson County | 196 | 50% | 46.9% | 3.1% | 1994 |
| Wilson County | 195 | 48.2% | 50.8% | 1% | 1985 |
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 Duplin 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 Duplin County, both outside North Carolina so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside NC (208 bridges here).
- Muscogee County, GA · 208 bridges
- Posey County, IN · 208 bridges
- Marshall County, KY · 208 bridges
- Caldwell County, MO · 208 bridges
Similar average build year
Nearest mean year-built outside NC (1988 here).
- Travis County, TX · avg 1988 · 1,544 bridges
- Grant County, OK · avg 1988 · 476 bridges
- Loudoun County, VA · avg 1988 · 442 bridges
- Licking County, OH · avg 1988 · 439 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (208)
US117N
PoorOver: CSX RAILROAD
0.1MI.N.JCT.SR1320, Duplin, NC
Built 1936 Load: 23.5 t ADT: 1,300
SR1306
PoorOver: NE CAPE FEAR RIVER
0.5 MI.N.JCT.SR1501, Duplin, NC
Built 1996 Load: 30.8 t ADT: 1,400
NC41
PoorOver: DOCTORS CREEK
0.4MI.W JCT.SR1128, Duplin, NC
Built 1970 Load: 40.8 t ADT: 2,400
NC241
PoorOver: LIMESTONE CREEK
1.3 MI.N. JCT.NC111, Duplin, NC
Built 1950 Load: 52.6 t ADT: 4,400
SR1192
PoorOver: CARLTONS MILL RUN
0.3 MI. E. JCT. SR1174, Duplin, NC
Built 1976 Load: 89.8 t ADT: 590
SR1112
PoorOver: BUCKHALL CREEK
0.5 MI. W. JCT. SR1105, Duplin, NC
Built 1979 Load: 89.8 t ADT: 430
NC50
PoorOver: CYPRESS CREEK
2.6 MI. S. JCT. NC41, Duplin, NC
Built 1978 Load: 89.8 t ADT: 1,100
SR1340
PoorOver: TURKEY CREEK
0.3 MI.S. OF JCT.SR1342, Duplin, NC
Built 1993 Load: 89.8 t ADT: 600
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.