Total bridges
175
Public highway bridges in Warren County
County profile · official public datasets
Warren County, MS
175 public highway bridges tracked in the FHWA National Bridge Inventory: 26.3% rated Good, 69.1% Fair, 4.6% Poor.
- 175
- Public bridges
- 26.3%
- Good condition
- 4.6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Warren 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 48%
- lowest Poor share in state
- 4.6%
- Poor-condition share
- 175
- public highway bridges
- 1972
- 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.
Warren County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Warren County ranks #39 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.6%). Warren County, Mississippi contains 175 public highway bridges. Roughly 26.3% are rated “Good,” 69.1% “Fair,” and 4.6% “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.
Good condition
26.3%
46 of 175 rated 7-9
Fair condition
69.1%
121 of 175 rated 5-6
Poor condition
4.6%
8 of 175 rated 4 or below
In-state Poor-share rank
#39 of 82
Among Mississippi counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 175 NBI-tracked bridges by lowest applicable component rating.
Good 26.3% (46)
Fair 69.1% (121)
Poor 4.6% (8)
Warren County's Poor-condition bridges carry 109,260 vehicle crossings a day
That is 12.9% of the county's reported daily bridge traffic on 4.6% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 13,658 crossings a day against 1,694 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 175 of 175 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
56% of Warren County's bridges have passed the 50-year mark
98 of the 175 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 26.3% 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 28.4% of the county's Poor-condition bridge traffic
I 20 over US 61N TO I20W RAMP, built 1971, carries 31,000 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 8-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 109,260 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Warren County's bridges were built
175 bridges with a recorded construction year, grouped by decade
- 1900s 6
1900–1909
6 bridges
- 1910s 5
1910–1919
5 bridges
- 1920s 8
1920–1929
8 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s
1950–1959
14 bridges
- 1960s
1960–1969
33 bridges
- 1970s
1970–1979
32 bridges
- 1980s
1980–1989
17 bridges
- 1990s
1990–1999
21 bridges
- 2000s 12
2000–2009
12 bridges
- 2010s
2010–2019
14 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1960s, when 33 of the county's bridges still in the inventory were built, which is 18.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1972, 14 years older than the Mississippi average of 1986.
How Warren County compares with Mississippi's closest counties by inventory size
The 5 Mississippi counties nearest Warren County in number of bridges, with their condition splits. Its 4.6% Poor share is the 5th-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1989 is 17 years older.
Showing the 5 closest of 81 Mississippi counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Webster County | 178 | 60.1% | 33.1% | 6.7% | 1985 |
| Winston County | 176 | 80.1% | 18.2% | 1.7% | 1992 |
| Smith County | 175 | 76.6% | 19.4% | 4% | 1990 |
| Warren County (this page) | 175 | 26.3% | 69.1% | 4.6% | 1972 |
| Greene County | 171 | 64.9% | 33.3% | 1.8% | 1990 |
| Montgomery County | 170 | 74.1% | 22.9% | 2.9% | 1989 |
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 Warren 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 Warren County, both outside Mississippi so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MS (175 bridges here).
- Hamilton County, NE · 175 bridges
- San Miguel County, NM · 175 bridges
- Madison County, NY · 175 bridges
- Perry County, OH · 175 bridges
Similar average build year
Nearest mean year-built outside MS (1972 here).
- Santa Clara County, CA · avg 1972 · 964 bridges
- Madison County, AL · avg 1972 · 710 bridges
- Kern County, CA · avg 1972 · 668 bridges
- York County, PA · avg 1972 · 569 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (8)
SR 465
PoorOver: CREEK
2.6 MI W US 61, Warren, MS
Built 1959 Load: 14.4 t ADT: 860
I 20
PoorOver: IOWA A KCSRR STOUT BAYOU
1.3 MI E LA ST LINE, Warren, MS
Built 1971 Load: 21.2 t ADT: 15,500
I 20
PoorOver: IOWA A KCSRR STOUT BAYOU
1.3 MI E LA ST LINE, Warren, MS
Built 1971 Load: 25.3 t ADT: 15,500
I 20
PoorOver: OLD HWY 27 KCS RR
4.5 MI E LA ST LINE, Warren, MS
Built 1955 Load: 28.3 t ADT: 23,000
I 20
PoorOver: BIG BLACK RIVER
HINDS/WARREN CL, Warren, MS
Built 1992 Load: 32.7 t ADT: 18,000
I 20
PoorOver: US 61N TO I20W RAMP
1.5 MI E LA ST LINE, Warren, MS
Built 1971 Load: 32.9 t ADT: 31,000
XR 80EB TO 20EB
PoorOver: US 80 WESTBOUND LANE
5.0 MI E LA STATE LINE, Warren, MS
Built 1960 Load: 36.7 t ADT: 1,800
SR 27
PoorOver: POLK CREEK
1.8 MI N HINDS CL, Warren, MS
Built 1960 Load: 40.4 t ADT: 3,600
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.