Total bridges
317
Public highway bridges in Washington County
County profile · official public datasets
317 public highway bridges tracked in the FHWA National Bridge Inventory: 34.7% rated Good, 54.9% Fair, 10.4% Poor.
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Washington County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
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.
According to the Federal Highway Administration's 2024 National Bridge Inventory, Washington County ranks #74 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.4%). Washington County, Mississippi contains 317 public highway bridges. Roughly 34.7% are rated “Good,” 54.9% “Fair,” and 10.4% “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
317
Public highway bridges in Washington County
Good condition
34.7%
110 of 317 rated 7-9
Fair condition
54.9%
174 of 317 rated 5-6
Poor condition
10.4%
33 of 317 rated 4 or below
In-state Poor-share rank
#74 of 82
Among Mississippi counties with 5+ bridges, lower share ranks better
Share of 317 NBI-tracked bridges by lowest applicable component rating.
That is 2.6% of the county's reported daily bridge traffic on 10.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 235 crossings a day against 1,135 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 316 of 317 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
135 of the 317 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 34.7% 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.
OLD LELAND ROAD over FISH LAKE-2006, built 2006, carries 2,736 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 33-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 7,746 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
317 bridges with a recorded construction year, grouped by decade
1920–1929
1 bridges
1930–1939
2 bridges
1940–1949
3 bridges
1950–1959
29 bridges
1960–1969
76 bridges
1970–1979
51 bridges
1980–1989
22 bridges
1990–1999
44 bridges
2000–2009
22 bridges
2010–2019
51 bridges
2020–2029
16 bridges
What this shows Construction peaked in the 1960s, when 76 of the county's bridges still in the inventory were built, which is 24% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1984) matches the Mississippi average (1986).
The 5 Mississippi counties nearest Washington County in number of bridges, with their condition splits. Its 10.4% Poor share is the 6th-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1984 is in line with the group.
Showing the 5 closest of 81 Mississippi counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jones County | 329 | 48.3% | 44.1% | 7.6% | 1982 |
| Washington County (this page) | 317 | 34.7% | 54.9% | 10.4% | 1984 |
| Madison County | 311 | 51.1% | 45.7% | 3.2% | 1983 |
| Harrison County | 301 | 52.8% | 41.9% | 5.3% | 1986 |
| Monroe County | 290 | 64.5% | 31.4% | 4.1% | 1989 |
| Forrest County | 283 | 46.3% | 49.5% | 4.2% | 1982 |
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 Washington County's. Source: FHWA National Bridge Inventory, 2024 release.
Two NBI-derived peer sets for Washington County, both outside Mississippi so the neighborhoods are not the same-state size table above.
Nearest county inventories outside MS (317 bridges here).
Nearest mean year-built outside MS (1984 here).
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Over: CANAL
SEC 19 T19N R 7W B, Washington, MS
Over: SHELL LAKE CUTOFF
SEC 24 T19N R 7W B, Washington, MS
Over: GRANICUS BAYOU
SEC 23 T16N R 8W B, Washington, MS
Over: SWIFTWATER BAYOU 0932
SEC 30 T17N R 8W B, Washington, MS
Over: BOGUE PHALIA RIVER
3.4 MI N US 82, Washington, MS
Over: CANAL
SEC 27 T17N R 8W B, Washington, MS
Over: DEER CREEK-1059
SEC 36 T15N R 7W, Washington, MS
Over: DRAINAGE DITCH
SEC 25 T18N R 6W, Washington, MS
Over: CANAL
SEC 28 T15N R 7W B, Washington, MS
Over: DITCH
SEC 18 T16N R 7W, Washington, MS
Over: BAYOU
SEC 30 T19N R 7W, Washington, MS
Over: CREEK
SEC 12 T18N R 8W, Washington, MS
Over: CANAL
SEC 22 T17N R 8W B, Washington, MS
Over: CANAL
SEC 20 T16N R 8W B, Washington, MS
Over: GRANICUS BAYOU
7.9 MI E SR 1, Washington, MS
Over: MAIN CANAL
SEC 11 T18N R 8W B, Washington, MS
Over: DEER CREEK
SEC 9 T18N R 7W B, Washington, MS
Over: CANAL
SEC 30 T19N R 6W, Washington, MS
Over: BLACK BAYOU
SEC 6 T19N R 9W, Washington, MS
Over: CREEK
2.2 MI W SR 1, Washington, MS
Over: CANAL NO 9
0.9 MI E SR 1, Washington, MS
Over: DITCH
SEC 26 T15N R 6W B, Washington, MS
Over: CANAL
SEC 14 T15N R 8W B, Washington, MS
Over: BEAR LAKE
SEC 36 T19N R 7W B, Washington, MS
Over: CANAL
SEC 27 T17N R 6W B, Washington, MS
Over: CANAL NO 7
2.8 MI N US 82, Washington, MS
Over: CREEK
SEC 15 T19N R 6W B, Washington, MS
Over: BOGUE PHALIA
SEC 30 T19N R 6W B, Washington, MS
Over: MILLS BAYOU
SEC 15 T15N R 5W B, Washington, MS
Over: MURPHY BAYOU
SEC 27 T15N R 5W B, Washington, MS
Over: DEER CREEK
SEC 7 T15N R 6W B, Washington, MS
Over: SILVER LAKE
SEC 15 T15N R 8W B, Washington, MS
Over: DEER CREEK
SEC 31 T16N R 6W, Washington, MS
Over: DITCH 13-1063
SEC 31 T15N R 5W, Washington, MS
Over: STEELE BAYOU
0.7 MI S SR 436, Washington, MS
Over: BOGUE PHALIA RIVER
1.5 MI E US 61, Washington, MS
Over: CANAL
SEC 28 T16N R 7W B, Washington, MS
Over: DRAINAGE DITCH NO 29
SEC 9 T17N R 6W, Washington, MS
Over: FOUR MILE LAKE
SEC 13 T16N R 6W B, Washington, MS
Over: DEER CREEK
SEC 24 T16N R 7W B, Washington, MS
Over: BOGUE PHALIA
SEC 19 T17N R 6W B, Washington, MS
Over: DEER CREEK
SEC 32 T16N R 6W B, Washington, MS
Over: US 82
SR 454 OVER US 82, Washington, MS
Over: STEELE BAYOU
0.1 MI E SR 1, Washington, MS
Over: CANAL
SEC 15 T15N R 6W B, Washington, MS
Over: CANAL
SEC 6 T16N R 7W, Washington, MS
Over: WILLIAMS BAYOU
SEC 17 T19N R 8W B, Washington, MS
Over: CANAL
SEC 19 T16N R 7W B, Washington, MS
Over: CANAL
SEC 32 T15N R 8W B, Washington, MS
Over: CANAL
SEC 12 T18N R 7W, Washington, MS
Read our methodology - how this data is sourced, computed, and verified.
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.