Total bridges
463
Public highway bridges in Anderson County
County profile · official public datasets
Anderson County, SC
463 public highway bridges tracked in the FHWA National Bridge Inventory: 29.6% rated Good, 65.7% Fair, 4.8% Poor.
- 463
- Public bridges
- 29.6%
- Good condition
- 4.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Anderson County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 43%
- lowest Poor share in state
- 4.8%
- Poor-condition share
- 463
- public highway bridges
- 1971
- 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.
Anderson County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Anderson County ranks #20 of 46 South Carolina counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.8%). Anderson County, South Carolina contains 463 public highway bridges. Roughly 29.6% are rated “Good,” 65.7% “Fair,” and 4.8% “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
29.6%
137 of 463 rated 7-9
Fair condition
65.7%
304 of 463 rated 5-6
Poor condition
4.8%
22 of 463 rated 4 or below
In-state Poor-share rank
#20 of 46
Among South Carolina counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 463 NBI-tracked bridges by lowest applicable component rating.
Good 29.6% (137)
Fair 65.7% (304)
Poor 4.8% (22)
Anderson County's Poor-condition bridges carry 58,500 vehicle crossings a day
That is 3.2% of the county's reported daily bridge traffic on 4.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,659 crossings a day against 2,603 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 463 of 463 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
63.7% of Anderson County's bridges have passed the 50-year mark
295 of the 463 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 29.6% 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 14.4% of the county's Poor-condition bridge traffic
US 76 WBL over EIGHTEEN MILE CREEK, built 1961, carries 8,450 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 22-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 58,500 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Anderson County's bridges were built
463 bridges with a recorded construction year, grouped by decade
- 1920s 7
1920–1929
7 bridges
- 1930s 17
1930–1939
17 bridges
- 1940s 15
1940–1949
15 bridges
- 1950s
1950–1959
81 bridges
- 1960s
1960–1969
153 bridges
- 1970s 47
1970–1979
47 bridges
- 1980s 48
1980–1989
48 bridges
- 1990s 43
1990–1999
43 bridges
- 2000s 30
2000–2009
30 bridges
- 2010s 19
2010–2019
19 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 1960s, when 153 of the county's bridges still in the inventory were built, which is 33% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1971, 6 years older than the South Carolina average of 1977.
How Anderson County compares with South Carolina's closest counties by inventory size
The 5 South Carolina counties nearest Anderson County in number of bridges, with their condition splits. Its 4.8% Poor share is the 4th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1983 is 12 years older.
Showing the 5 closest of 45 South Carolina counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Greenville County | 635 | 56.7% | 35.4% | 7.9% | 1981 |
| Horry County | 479 | 50.1% | 46.1% | 3.8% | 1986 |
| Anderson County (this page) | 463 | 29.6% | 65.7% | 4.8% | 1971 |
| Richland County | 361 | 50.1% | 46% | 3.9% | 1979 |
| Charleston County | 336 | 37.8% | 59.8% | 2.4% | 1988 |
| Pickens County | 291 | 48.1% | 42.6% | 9.3% | 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 Anderson 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 Anderson County, both outside South Carolina so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside SC (463 bridges here).
- Calcasieu County, LA · 463 bridges
- Darke County, OH · 463 bridges
- Jefferson County, CO · 464 bridges
- Hamilton County, TN · 464 bridges
Similar average build year
Nearest mean year-built outside SC (1971 here).
- Wayne County, MI · avg 1971 · 1,026 bridges
- Baltimore County, MD · avg 1971 · 783 bridges
- Washington County, PA · avg 1971 · 655 bridges
- Linn County, OR · avg 1971 · 566 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (463)
S-4-141
PoorOver: BLUE RIDGE RR
CITY OF ANDERSON, Anderson, SC
Built 1938 Load: 16.5 t ADT: 5,600
S-4-294
PoorOver: WILSONS CREEK
2.7MI SE IVA, Anderson, SC
Built 1958 Load: 18.1 t ADT: 75
SC 88
PoorOver: THREE & TWENTY CREEK
9.1MI NE OF PENDLETON, Anderson, SC
Built 1949 Load: 19.1 t ADT: 6,800
C-4-2096
PoorOver: WILSONS CR
11.8 MI SE OF ANDERSON, Anderson, SC
Built 1964 Load: 19.1 t ADT: 125
SC 412
PoorOver: TRIB BIG GENEROSTEE CR.
9.9 MI SW OF ANDERSON, Anderson, SC
Built 1955 Load: 20.1 t ADT: 300
S-1178
PoorOver: U.S. 29
3.0 MI NW WILLIAMSTON, Anderson, SC
Built 1957 Load: 23.3 t ADT: 175
US 76
PoorOver: NORFOLK SOUTHERN RR
4.2MI SE OF BELTON, Anderson, SC
Built 1929 Load: 25.3 t ADT: 8,100
US 29
PoorOver: SAVANNAH RIV/CO RD IN GA
13.7MI SW OF ANDERSON, Anderson, SC
Built 1956 Load: 25.9 t ADT: 4,900
S-4-73
PoorOver: RELIEF FOR 3 & 20 CK
7.3MI NE PENDLETON, Anderson, SC
Built 1976 Load: 26.2 t ADT: 700
US 76 EB
PoorOver: BROADWAY CREEK
3.8MI SE OF ANDERSON, Anderson, SC
Built 1920 Load: 26.9 t ADT: 6,750
US 76 WB
PoorOver: BROADWAY CREEK
3.8MI SE OF ANDERSON, Anderson, SC
Built 1969 Load: 32.4 t ADT: 6,750
SC 20
PoorOver: S.C. 252
5.0 MI SW OF HONEA PATH, Anderson, SC
Built 1961 Load: 41.5 t ADT: 1,550
US 76 WBL
PoorOver: EIGHTEEN MILE CREEK
1.1 MI W OF PENDLETON, Anderson, SC
Built 1961 Load: 48.3 t ADT: 8,450
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.