Total bridges
322
Public highway bridges in Lafayette County
County profile · official public datasets
Lafayette County, LA
322 public highway bridges tracked in the FHWA National Bridge Inventory: 44.7% rated Good, 47.5% Fair, 7.8% Poor.
- 322
- Public bridges
- 44.7%
- Good condition
- 7.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Lafayette County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 31%
- lowest Poor share in state
- 7.8%
- Poor-condition share
- 322
- public highway bridges
- 1986
- 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.
Lafayette County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Lafayette County ranks #20 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.8%). Lafayette County, Louisiana contains 322 public highway bridges. Roughly 44.7% are rated “Good,” 47.5% “Fair,” and 7.8% “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
44.7%
144 of 322 rated 7-9
Fair condition
47.5%
153 of 322 rated 5-6
Poor condition
7.8%
25 of 322 rated 4 or below
In-state Poor-share rank
#20 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 322 NBI-tracked bridges by lowest applicable component rating.
Good 44.7% (144)
Fair 47.5% (153)
Poor 7.8% (25)
Lafayette County's Poor-condition bridges carry 99,956 vehicle crossings a day
That is 3.3% of the county's reported daily bridge traffic on 7.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,998 crossings a day against 8,168 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 322 of 322 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
31.7% of Lafayette County's bridges have passed the 50-year mark
102 of the 322 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 44.7% 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.
One structure carries 29.3% of the county's Poor-condition bridge traffic
JOHNSTON STREET over COULEE MINE BR, built 1958, carries 29,320 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 25-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 99,956 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Lafayette County's bridges were built
322 bridges with a recorded construction year, grouped by decade
- 1920s 1
1920–1929
1 bridges
- 1930s 4
1930–1939
4 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 17
1950–1959
17 bridges
- 1960s
1960–1969
39 bridges
- 1970s
1970–1979
70 bridges
- 1980s
1980–1989
67 bridges
- 1990s 27
1990–1999
27 bridges
- 2000s
2000–2009
42 bridges
- 2010s
2010–2019
45 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1970s, when 70 of the county's bridges still in the inventory were built, which is 21.7% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1986) matches the Louisiana average (1982).
How Lafayette County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Lafayette County in number of bridges, with their condition splits. Its 7.8% Poor share is the 3rd-lowest of these 6. Its average build year of 1986 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 |
|---|---|---|---|---|---|
| Vernon County | 341 | 57.8% | 34.6% | 7.6% | 1989 |
| Ouachita County | 337 | 27.9% | 59.3% | 12.8% | 1981 |
| Lafayette County (this page) | 322 | 44.7% | 47.5% | 7.8% | 1986 |
| St. Landry County | 317 | 43.2% | 49.2% | 7.6% | 1980 |
| Natchitoches County | 313 | 46% | 38.7% | 15.3% | 1983 |
| Washington County | 285 | 44.2% | 44.2% | 11.6% | 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 Lafayette 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 Lafayette County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (322 bridges here).
- White County, AR · 322 bridges
- Chesterfield County, VA · 322 bridges
- Christian County, IL · 321 bridges
- Jackson County, IN · 321 bridges
Similar average build year
Nearest mean year-built outside LA (1986 here).
- El Paso County, TX · avg 1986 · 783 bridges
- Weld County, CO · avg 1986 · 614 bridges
- Polk County, IA · avg 1986 · 545 bridges
- Canadian County, OK · avg 1986 · 493 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (144)
LA0093
GoodOver: CREEK
0.37 MI NORTH OF I-10, Lafayette, LA
Built 1955 Load: 32.4 t ADT: 10,639
LA0093
GoodOver: CREEK
1.1 MI NORTH OF I-10, Lafayette, LA
Built 1955 Load: 32.4 t ADT: 10,639
US0090
GoodOver: Cypress Bayou
0.2 MI NORTH OFLA 92, Lafayette, LA
Built 1965 Load: 32.4 t ADT: 62,432
I0010
GoodOver: DRAIN
0.50 Mi E of LA 3184, Lafayette, LA
Built 1968 Load: 32.4 t ADT: 56,748
I0049
GoodOver: CREEK
0.88 MI NORTH OF I-10, Lafayette, LA
Built 1963 Load: 32.4 t ADT: 21,140
I0049
GoodOver: CREEK
0.88 MI NORTH OF I-10, Lafayette, LA
Built 1963 Load: 32.4 t ADT: 74,085
LA0089
GoodOver: CREEK
4.6 MI SOUTH OF LA 92, Lafayette, LA
Built 1959 Load: 32.4 t ADT: 1,840
LA0720
GoodOver: DITCH
0.75 MI WEST OF LA 719, Lafayette, LA
Built 1964 Load: 32.4 t ADT: 1,391
E Kaliste Saloom
GoodOver: DRAINAGE DITCH
0.2 MI SOUTH LA 728-2, Lafayette, LA
Built 1991 Load: 32.4 t ADT: 12,329
Hollier Rd.
GoodOver: INDIAN BAYOU
0.44 MI W of LA 724, Lafayette, LA
Built 1993 Load: 32.4 t ADT: 140
E. Pinhook Rd.
GoodOver: COULEE
0.18 Mi N of LA 94, Lafayette, LA
Built 1989 Load: 32.4 t ADT: 2,653
W. Pont Des Mouton
GoodOver: FRANCOIS COULEE
0.03 MI. W. US 167, Lafayette, LA
Built 1962 Load: 32.4 t ADT: 8,400
Irby Rd.
GoodOver: COULEE
0.19 MI East of Dupre St, Lafayette, LA
Built 2002 Load: 32.4 t ADT: 100
LEBLANC RD
GoodOver: COULEE
1.1 MI. W. OF US 167, Lafayette, LA
Built 2018 Load: 32.7 t ADT: 1,153
MICHAUD ST
GoodOver: I-49
.15 Mi SW of LA1252, Lafayette, LA
Built 1980 Load: 32.7 t ADT: 43,200
Walker Rd
GoodOver: MINE BRANCH COULEE
0.1 MI. E. Orchid Dr., Lafayette, LA
Built 1973 Load: 32.7 t ADT: 2,040
Rue Du Belier
GoodOver: RUE DE BELIER EXT OVER C
0.25 Mi S of LA 93, Lafayette, LA
Built 2009 Load: 33.0 t ADT: 3,472
LA0092
GoodOver: CYPRESS BAYOU COULEE
0.8 MI WEST OF US 90, Lafayette, LA
Built 2012 Load: 33.0 t ADT: 8,744
Curran Ln.
GoodOver: CANAL
0.3 Mi W of Amb Caffery, Lafayette, LA
Built 2007 Load: 33.0 t ADT: 1,848
San Marcos Drive
GoodOver: Retention pond
0.08 Mi East of LA 339, Lafayette, LA
Built 2016 Load: 33.4 t ADT: 572
Memory Ln.
GoodOver: MINE BRANCH COULEE
0.59 Mi SW of LA 182, Lafayette, LA
Built 1970 Load: 33.4 t ADT: 500
S. St. Louis St
GoodOver: MINE BRANCH COULEE
0.09 MI E of White Oak Dr, Lafayette, LA
Built 1970 Load: 33.4 t ADT: 400
Jeanne St
GoodOver: MINE BRANCH COULEE
0.40 Mi SW of US 90, Lafayette, LA
Built 1970 Load: 33.4 t ADT: 480
Landsdowne Way
GoodOver: DRAIN
0.2 Mi SE of Albion Way, Lafayette, LA
Built 2008 Load: 34.0 t ADT: 128
Oaklawn Ave.
GoodOver: MINE BRANCH COULEE
.58 Mi W of LA 182, Lafayette, LA
Built 1970 Load: 34.3 t ADT: 500
I0010
GoodOver: I0049/US0167
6.43 Mi. West of LA 328, Lafayette, LA
Built 1968 Load: 34.5 t ADT: 2,969
I0049
GoodOver: Pont Des Mouton
0.95 MI NORTH OF I-10, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 38,572
I0049
GoodOver: LA 98
2.5 MI N of I-10, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 66,737
I0049
GoodOver: LA 98 [Gloria Switch Rd]
1.92 MI S of LA 726, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 11,728
Theriot Rd.
GoodOver: QUEUE DE TORTUE BAYOU
1.1 Mi E of LA 35, Lafayette, LA
Built 2015 Load: 34.7 t ADT: 66
Wall St
GoodOver: COULEE
.07 MI E of Delta RD, Lafayette, LA
Built 2011 Load: 35.0 t ADT: 146
Gazette Rd
GoodOver: Bayou Queue De Tortue
0.2 Miles West of LA 724, Lafayette, LA
Built 2018 Load: 35.6 t ADT: 586
LA1252
GoodOver: Bayou Vermilion
4.2 Mi E of I49 Front RD, Lafayette, LA
Built 2022 Load: 35.6 t ADT: 610
LA00339-S
GoodOver: Bayou Parc Perdue
0.9 Mi E of LA 339, Lafayette, LA
Built 2022 Load: 35.6 t ADT: 4,993
Chemin Metairie
GoodOver: Parc Perdu Bayou
.1 M West of Detente Rd., Lafayette, LA
Built 2008 Load: 36.3 t ADT: 2,284
Kidder Rd
GoodOver: DRAIN
1.49 MI N OF LA 1252, Lafayette, LA
Built 2013 Load: 36.3 t ADT: 317
S. Domingue Ave.
GoodOver: Ill Des Cannes-Lat 7
0.09 MI N of Ridge Rd, Lafayette, LA
Built 2007 Load: 36.3 t ADT: 1,782
Dulles Dr.
GoodOver: COULEE ILE DES CANNES
0.9 W of La 93, Lafayette, LA
Built 2004 Load: 36.3 t ADT: 1,703
LA0339
GoodOver: Creek
2.8 Mi N. of La 338, Lafayette, LA
Built 2022 Load: 36.6 t ADT: 4,990
Beau Bassin Rd.
GoodOver: GASTON COULEE
2.6 MI N of LA 98, Lafayette, LA
Built 2011 Load: 36.6 t ADT: 145
Guillot Rd.
GoodOver: COULEE
1.0 MI S of LA 89, Lafayette, LA
Built 1991 Load: 36.6 t ADT: 440
Bayou Tortue Rd.
GoodOver: COULEE FORTUNE
5.0 MI. WEST OF LA 96, Lafayette, LA
Built 2013 Load: 36.9 t ADT: 1,310
Marteau Rd.
GoodOver: LA SALLE COULEE
1.0 M SW of LA 92, Lafayette, LA
Built 1991 Load: 36.9 t ADT: 320
St. Esprit Rd.
GoodOver: Coulee
.4 Mi N of W Musique Rd, Lafayette, LA
Built 2007 Load: 37.2 t ADT: 1,082
S. Bernard Rd.
GoodOver: Cypress Bayou
0.8 Miles S. of La 3073, Lafayette, LA
Built 2017 Load: 37.3 t ADT: 1,597
Vincent Rd.
GoodOver: Anslem Coulee
0.30 Mi W of LA 339, Lafayette, LA
Built 2012 Load: 37.3 t ADT: 3,155
LA7281
GoodOver: GASTON COULEE
0.06 MI N of I-10, Lafayette, LA
Built 1982 Load: 37.3 t ADT: 10,589
ESPAISIE RD
GoodOver: EDITH COULEE
0.46 MI S OF LA 92, Lafayette, LA
Built 2017 Load: 37.6 t ADT: 702
Argus Rd.
GoodOver: COULEE
.1 Mi E of Grand Ave, Lafayette, LA
Built 2004 Load: 38.2 t ADT: 60
Venduer Rd.
GoodOver: COULEE
0.41 Mi SE of La 3025, Lafayette, LA
Built 1999 Load: 38.2 t ADT: 100
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.