Total bridges
379
Public highway bridges in Jefferson County
County profile · official public datasets
Jefferson County, LA
379 public highway bridges tracked in the FHWA National Bridge Inventory: 58.6% rated Good, 36.9% Fair, 4.5% Poor.
- 379
- Public bridges
- 58.6%
- Good condition
- 4.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Jefferson County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 8%
- lowest Poor share in state
- 4.5%
- Poor-condition share
- 379
- public highway bridges
- 1984
- 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.
Jefferson County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Jefferson County ranks #5 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.5%). Jefferson County, Louisiana contains 379 public highway bridges. Roughly 58.6% are rated “Good,” 36.9% “Fair,” and 4.5% “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
58.6%
222 of 379 rated 7-9
Fair condition
36.9%
140 of 379 rated 5-6
Poor condition
4.5%
17 of 379 rated 4 or below
In-state Poor-share rank
#5 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 379 NBI-tracked bridges by lowest applicable component rating.
Good 58.6% (222)
Fair 36.9% (140)
Poor 4.5% (17)
Jefferson County's Poor-condition bridges carry 278,108 vehicle crossings a day
That is 4.5% of the county's reported daily bridge traffic on 3.8% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 25,283 crossings a day against 19,771 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 293 of 379 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
35.4% of Jefferson County's bridges have passed the 50-year mark
134 of the 379 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 58.6% 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 49.5% of the county's Poor-condition bridge traffic
I0010 over VET MEM HWY, built 1967, carries 137,542 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 17-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 278,108 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Jefferson County's bridges were built
379 bridges with a recorded construction year, grouped by decade
- 1930s 1
1930–1939
1 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 17
1950–1959
17 bridges
- 1960s
1960–1969
69 bridges
- 1970s
1970–1979
71 bridges
- 1980s
1980–1989
76 bridges
- 1990s
1990–1999
49 bridges
- 2000s
2000–2009
52 bridges
- 2010s
2010–2019
36 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1980s, when 76 of the county's bridges still in the inventory were built, which is 20.1% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1984) matches the Louisiana average (1982).
How Jefferson County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Jefferson County in number of bridges, with their condition splits. Its 4.5% Poor share is the 1st-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1982 is in line with the group.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Orleans County | 382 | 43.7% | 46.3% | 9.9% | 1976 |
| Jefferson County (this page) | 379 | 58.6% | 36.9% | 4.5% | 1984 |
| St. Tammany County | 360 | 33.3% | 60.6% | 6.1% | 1976 |
| Vernon County | 341 | 57.8% | 34.6% | 7.6% | 1989 |
| Ouachita County | 337 | 27.9% | 59.3% | 12.8% | 1981 |
| Lafayette County | 322 | 44.7% | 47.5% | 7.8% | 1986 |
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 Jefferson 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 Jefferson County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (379 bridges here).
- Graves County, KY · 380 bridges
- Lincoln County, MS · 380 bridges
- Butler County, PA · 378 bridges
- Baldwin County, AL · 381 bridges
Similar average build year
Nearest mean year-built outside LA (1984 here).
- Hennepin County, MN · avg 1984 · 936 bridges
- Duval County, FL · avg 1984 · 831 bridges
- El Paso County, CO · avg 1984 · 686 bridges
- Bell County, TX · avg 1984 · 660 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (222)
W Esplanade Ave S
GoodOver: ELMWOOD CANAL
0.6 MILE EAST OF POWER BL, Jefferson, LA
Built 2011 Load: 10.4 t
I0010
GoodOver: I-10 EAST AND WEST BOUND
0.5 MI EAST OF CLEARVIEW, Jefferson, LA
Built 2009 Load: 17.8 t ADT: 15,955
I0010
GoodOver: I-10 W.B. ON-RAMP
02264501502058, Jefferson, LA
Built 2001 Load: 20.1 t ADT: 40,208
CAUSEWAY BLVD
GoodOver: VETERANS MEMORIAL BLVD.
0.2MI.N.OF I-10, Jefferson, LA
Built 1977 Load: 20.1 t ADT: 26,850
N. Causeway BLVD
GoodOver: VETERANS MEMORIAL BLVD
0.2MI.N.OF I-10, Jefferson, LA
Built 1977 Load: 20.1 t ADT: 21,175
LAPALCO BLVD
GoodOver: AMES CANAL
0.3 MI.W.OF AMES BL, Jefferson, LA
Built 1970 Load: 20.7 t ADT: 2,000
NICOLLE BLVD
GoodOver: KELLY CANAL
1.1 MI S OF US 90, Jefferson, LA
Built 1987 Load: 21.1 t ADT: 750
US0090-B
GoodOver: DRAIN CANAL
6.1 MILES WEST OF MISSISS, Jefferson, LA
Built 1983 Load: 22.0 t ADT: 67,143
David Dr
GoodOver: CANAL NO. 4
.8 MILES NORTH OF WEST ME, Jefferson, LA
Built 2004 Load: 22.0 t
Transcontinental D
GoodOver: DRAIN CANAL NO. 4
0.8 MI S. OF VETERANS HWY, Jefferson, LA
Built 1995 Load: 22.4 t ADT: 20,800
W. Napolean Ave
GoodOver: CANAL NO. 4
0.05 W OF KENT AVENUE, Jefferson, LA
Built 1995 Load: 22.4 t ADT: 20,800
W. Napolean Ave
GoodOver: CANAL #4
0.7 MI. E. OF DAVID DRIVE, Jefferson, LA
Built 2000 Load: 22.4 t
W. Napolean Ave
GoodOver: CANAL NUMBER 4
0.5 MI E OF DAVID DRIVE, Jefferson, LA
Built 1996 Load: 22.7 t
W Napolean
GoodOver: Canal 4
.1 mile east of David, Jefferson, LA
Built 1999 Load: 23.0 t ADT: 2,146
LAPALCO BLVD
GoodOver: OAKWOOD CANAL
0.1MI.W OF BELLCHASE, Jefferson, LA
Built 1960 Load: 23.7 t ADT: 20,000
CITRUS RD
GoodOver: SONIAT CANAL
0.01 MI.WEST.OF.HICK, Jefferson, LA
Built 1965 Load: 23.7 t ADT: 1,000
Whitney AVE
GoodOver: Verret Canal
1.5 Mi S of US 90, Jefferson, LA
Built 2004 Load: 24.0 t ADT: 250
LAPALCO BLVD
GoodOver: WEYRAUCH CANAL
0.6MI.E.OF MANHATTAN, Jefferson, LA
Built 1976 Load: 24.0 t ADT: 30,000
W Metairie Ave
GoodOver: Canal #5
0.3 Miles W of David D, Jefferson, LA
Built 2002 Load: 24.3 t ADT: 387
US0090
GoodOver: DRAIN CANAL
4.0 MI WEST OF US 90B, Jefferson, LA
Built 1940 Load: 24.9 t ADT: 28,780
Smithway Drive
GoodOver: Drain to Verret Canal
0.3 Mi. W. of Gretna BLVD, Jefferson, LA
Built 2010 Load: 26.2 t ADT: 976
I0010
GoodOver: VETERANS BLVD OFF RAMP
0.3 MILES NORTH OF I 10, Jefferson, LA
Built 2011 Load: 26.2 t ADT: 15,955
I0010
GoodOver: CANAL NO 3
1.9 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 26.2 t ADT: 15,955
PALMETTO ST
GoodOver: 17 TH STREET CANAL
0.01M NORTH OF ORPHEUM, Jefferson, LA
Built 1991 Load: 26.2 t ADT: 1,000
Destrehan Ave
GoodOver: CANAL
1.0 MI E OF LA 3134, Jefferson, LA
Built 2005 Load: 26.9 t
I0010
GoodOver: GROUND
0.5 MILES NORTH OF I-10, Jefferson, LA
Built 2012 Load: 27.2 t ADT: 15,955
LA3139
GoodOver: RAMP "C"
.85 MI EAST OF LA 3154, Jefferson, LA
Built 1986 Load: 27.2 t ADT: 12,192
Cleary Ave
GoodOver: CANAL #4
1.5 MILES SOUTH OF I-10, Jefferson, LA
Built 2004 Load: 27.2 t
BAINBRIDGE AVE
GoodOver: CANAL NUMBER 14
0.5M SOUTH OF VETERAN, Jefferson, LA
Built 1970 Load: 27.2 t
I0010
GoodOver: I-10 WB OFF RAMP
2 MILES WEST OF ORLEANS P, Jefferson, LA
Built 2009 Load: 27.5 t ADT: 15,955
I0010
GoodOver: I-10
1 MILE NORTH OF I-10, Jefferson, LA
Built 2012 Load: 27.9 t ADT: 15,955
US0090
GoodOver: GROUND
0.5 MI SOUTHWEST OF MISSI, Jefferson, LA
Built 2013 Load: 28.2 t ADT: 6,160
LAPALCO BLVD
GoodOver: SEGNETTE BAYOU
0.9 MI. S. OF US 90 B, Jefferson, LA
Built 1977 Load: 28.2 t ADT: 2,000
PATRIOT ST
GoodOver: SWIFT CANAL
1 MI E. OF BARATARIA BLVD, Jefferson, LA
Built 1984 Load: 28.5 t ADT: 450
I0010
GoodOver: LA 49
3.7 MI WEST OF LA 3152, Jefferson, LA
Built 2001 Load: 28.8 t ADT: 15,955
US0090
GoodOver: LA 18 AND 541
1.0 MI S OF THE MISSISSIP, Jefferson, LA
Built 2013 Load: 29.2 t ADT: 55,210
US0090
GoodOver: LA 48 AND LA 611-1
0.0 MI NORTH OF MISSISSIP, Jefferson, LA
Built 2013 Load: 29.2 t ADT: 30,800
RIDGELAKE DR
GoodOver: CANAL NO. 2
0.1 MI EAST OF CAUSEWAY, Jefferson, LA
Built 2003 Load: 29.5 t
CANAL RD
GoodOver: DRAINAGE CANAL
0.5 MI W OF LA 45, Jefferson, LA
Built 2014 Load: 29.8 t ADT: 431
RANDOLPH ST
GoodOver: DRAINAGE CANAL
0.5 MI W OF LA 45, Jefferson, LA
Built 2013 Load: 29.8 t ADT: 431
W Napolean
GoodOver: Suburban Canal
.3 miles east of Clearvie, Jefferson, LA
Built 2003 Load: 29.8 t ADT: 21,460
BROOKLYN AVE
GoodOver: BAYOU FATMA
O.1 MI.N. OF LAPALCO BLVD, Jefferson, LA
Built 1970 Load: 30.1 t ADT: 3,000
LIVE OAK BLVD
GoodOver: SOUTH KENNER CANAL
3.0 M NW OF US 90, Jefferson, LA
Built 1988 Load: 30.1 t ADT: 2,000
US0090
GoodOver: LA 48 AND 611-1
0.5 MI SOUTH WEST OF MISS, Jefferson, LA
Built 2013 Load: 30.8 t ADT: 28,780
NICOLLE BLVD
GoodOver: MAIN CANAL
1.4M SOUTH OF LAPALCO BLV, Jefferson, LA
Built 1992 Load: 30.8 t ADT: 1,000
West Napoleon Ave
GoodOver: Soniat Canal
1.3 MI E OF WILLIAMS BLVD, Jefferson, LA
Built 2005 Load: 31.1 t ADT: 21,463
West Napoleon Ave
GoodOver: Soniat Canal
0.06 mi W of David Drive, Jefferson, LA
Built 2005 Load: 31.1 t ADT: 24,341
PATRIOT ST
GoodOver: DRAIN CANAL
0.2 MI E. OF BARATARIA, Jefferson, LA
Built 1970 Load: 31.1 t ADT: 250
W. Canal Dr.
GoodOver: ELMWOOD CANAL
0.4 Mi N of Veterans BLVD, Jefferson, LA
Built 1999 Load: 31.1 t
26TH ST
GoodOver: CA-BUTLER CANAL #17
0.15 MI W OF SHARON ST, Jefferson, LA
Built 2010 Load: 31.4 t
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.