Total bridges
47
Public highway bridges in St. Bernard County
County profile · official public datasets
St. Bernard County, LA
47 public highway bridges tracked in the FHWA National Bridge Inventory: 55.3% rated Good, 38.3% Fair, 6.4% Poor.
- 47
- Public bridges
- 55.3%
- Good condition
- 6.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
St. Bernard County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 16%
- lowest Poor share in state
- 6.4%
- Poor-condition share
- 47
- public highway bridges
- 1998
- 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.
St. Bernard County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Bernard County ranks #10 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.4%). St. Bernard County, Louisiana contains 47 public highway bridges. Roughly 55.3% are rated “Good,” 38.3% “Fair,” and 6.4% “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.
Good condition
55.3%
26 of 47 rated 7-9
Fair condition
38.3%
18 of 47 rated 5-6
Poor condition
6.4%
3 of 47 rated 4 or below
In-state Poor-share rank
#10 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 47 NBI-tracked bridges by lowest applicable component rating.
Good 55.3% (26)
Fair 38.3% (18)
Poor 6.4% (3)
St. Bernard County's Poor-condition bridges carry 53,192 vehicle crossings a day
That is 14.9% of the county's reported daily bridge traffic on 6.4% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 17,731 crossings a day against 8,926 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 47 of 47 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
19.1% of St. Bernard County's bridges have passed the 50-year mark
9 of the 47 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 55.3% 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 89.7% of the county's Poor-condition bridge traffic
LA0039 over LA 39 OVER RR CANAL, built 1991, carries 47,739 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 3-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 53,192 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When St. Bernard County's bridges were built
47 bridges with a recorded construction year, grouped by decade
- 1950s 2
1950–1959
2 bridges
- 1960s 5
1960–1969
5 bridges
- 1970s 2
1970–1979
2 bridges
- 1980s 6
1980–1989
6 bridges
- 1990s 4
1990–1999
4 bridges
- 2000s 6
2000–2009
6 bridges
- 2010s
2010–2019
19 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 2010s, when 19 of the county's bridges still in the inventory were built, which is 40.4% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year is 1998, 16 years newer than the Louisiana average of 1982.
How St. Bernard County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest St. Bernard County in number of bridges, with their condition splits. Its 6.4% Poor share is the 3rd-lowest of these 6. Its average build year of 1998 against a peer-group mean of 1978 is 20 years newer.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| East Carroll County | 55 | 29.1% | 50.9% | 20% | 1980 |
| Tensas County | 52 | 57.7% | 38.5% | 3.8% | 1979 |
| Pointe Coupee County | 50 | 22% | 52% | 26% | 1970 |
| St. Bernard County (this page) | 47 | 55.3% | 38.3% | 6.4% | 1998 |
| Concordia County | 42 | 45.2% | 45.2% | 9.5% | 1982 |
| St. John the Baptist County | 40 | 37.5% | 60% | 2.5% | 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 St. Bernard 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 St. Bernard County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (47 bridges here).
- Juneau City and County, AK · 47 bridges
- Jackson County, CO · 47 bridges
- Ben Hill County, GA · 47 bridges
- Long County, GA · 47 bridges
Similar average build year
Nearest mean year-built outside LA (1998 here).
- Collin County, TX · avg 1998 · 1,127 bridges
- Orange County, FL · avg 1998 · 885 bridges
- Fort Bend County, TX · avg 1998 · 795 bridges
- Montgomery County, TX · avg 1998 · 710 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (18)
LA0300
FairOver: REGGIO CANAL
1.2 MI S OF LA 46, St. Bernard, LA
Built 1957 Load: 21.8 t ADT: 728
JUDY DR
FairOver: 20 ARPENT CANAL
0.15 MI N E OF LA 39, St. Bernard, LA
Built 1988 Load: 22.0 t ADT: 618
LA0046
FairOver: BAYOU LA LOUTRE
4.6 MI EAST OF LA 300, St. Bernard, LA
Built 1957 Load: 23.0 t ADT: 1,536
CCCFERRY
FairOver: PARIS RD/CHAL. FERRY RAM
0.8 MI S OF LA 39, St. Bernard, LA
Built 1968 Load: 25.4 t ADT: 1,500
LA0046
FairOver: BAYOU LALOUTRE
5.4 MI SOUTH OF LA 1245, St. Bernard, LA
Built 1984 Load: 27.2 t ADT: 2,045
DEER CREEK DR
FairOver: 20 ARPENT CANAL
0.05 MI NE OF LA 39, St. Bernard, LA
Built 1985 Load: 27.9 t ADT: 880
OAK RIDGE BLVD
FairOver: 20 ARPENT CANAL
0.05 MI E OF LA 39, St. Bernard, LA
Built 1986 Load: 27.9 t ADT: 385
PATRICIA ST
FairOver: GUICHARD CANAL
.6 MI SE OF LA 39, St. Bernard, LA
Built 1974 Load: 28.5 t ADT: 5,918
PATRICIA ST
FairOver: GUERENGER CANAL
.6 MI NE OF LA. 39, St. Bernard, LA
Built 1974 Load: 28.5 t ADT: 2,600
MELVIN PEREZ PKWY
FairOver: DRAINAGE CANAL
0.04 MI S OF LA 46, St. Bernard, LA
Built 1990 Load: 29.2 t ADT: 3,191
PATRICIA ST
FairOver: EICKES CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2000 Load: 29.8 t ADT: 1,419
LA0039
FairOver: DRAIN CANAL
2.37 MI NORTH OF LA 36, St. Bernard, LA
Built 1967 Load: 32.4 t ADT: 47,739
Jacob Dr
FairOver: 20 Arpent Canal
0.4 Mi. N. of LA 39, St. Bernard, LA
Built 1997 Load: 34.0 t ADT: 863
DESPAUX DR
FairOver: 20 ARPENT CANAL
0.5 MI N OF LA 39, St. Bernard, LA
Built 1994 Load: 35.0 t ADT: 216
CHARLES COURT
FairOver: 20 ARPENT CANAL
1.0 MI N-NE OF LA 39, St. Bernard, LA
Built 1960 Load: 39.9 t ADT: 147
LA0046
FairOver: BAYOU LALOUTRE
5.4 MI SOUTH OF LA 1245, St. Bernard, LA
Built 1984 Load: 40.8 t ADT: 2,553
FLORIDA AVE
FairOver: CORINNE CANAL
1.2 MI N OF LA 39, St. Bernard, LA
Built 2011 Load: 45.0 t ADT: 90
Palmisano Blvd
FairOver: 20 Arpent Canal
0.3 Mi. N. of La 39, St. Bernard, LA
Built 2017 Load: 55.7 t ADT: 400
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.