Total bridges
143
Public highway bridges in Iberia County
County profile · official public datasets
Iberia County, LA
143 public highway bridges tracked in the FHWA National Bridge Inventory: 44.1% rated Good, 46.2% Fair, 9.8% Poor.
- 143
- Public bridges
- 44.1%
- Good condition
- 9.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Iberia County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 47%
- lowest Poor share in state
- 9.8%
- Poor-condition share
- 143
- public highway bridges
- 1985
- 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.
Iberia County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Iberia County ranks #30 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.8%). Iberia County, Louisiana contains 143 public highway bridges. Roughly 44.1% are rated “Good,” 46.2% “Fair,” and 9.8% “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
44.1%
63 of 143 rated 7-9
Fair condition
46.2%
66 of 143 rated 5-6
Poor condition
9.8%
14 of 143 rated 4 or below
In-state Poor-share rank
#30 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 143 NBI-tracked bridges by lowest applicable component rating.
Good 44.1% (63)
Fair 46.2% (66)
Poor 9.8% (14)
Iberia County's Poor-condition bridges carry 31,377 vehicle crossings a day
That is 3.6% of the county's reported daily bridge traffic on 9.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,241 crossings a day against 5,799 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 143 of 143 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
42.7% of Iberia County's bridges have passed the 50-year mark
61 of the 143 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 44.1% 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 38.9% of the county's Poor-condition bridge traffic
US0090 over NEW IBERIA SOUTHERN CANA, built 1999, carries 12,192 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 14-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 31,377 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Iberia County's bridges were built
143 bridges with a recorded construction year, grouped by decade
- 1930s 2
1930–1939
2 bridges
- 1940s 5
1940–1949
5 bridges
- 1950s 5
1950–1959
5 bridges
- 1960s
1960–1969
40 bridges
- 1970s 12
1970–1979
12 bridges
- 1980s
1980–1989
20 bridges
- 1990s 11
1990–1999
11 bridges
- 2000s
2000–2009
22 bridges
- 2010s
2010–2019
26 bridges
What this shows Construction peaked in the 1960s, when 40 of the county's bridges still in the inventory were built, which is 28% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1985) matches the Louisiana average (1982).
How Iberia County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Iberia County in number of bridges, with their condition splits. Its 9.8% Poor share is the 2nd-lowest of these 6. Its average build year of 1985 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 |
|---|---|---|---|---|---|
| Claiborne County | 148 | 27% | 48% | 25% | 1981 |
| Avoyelles County | 147 | 47.6% | 33.3% | 19% | 1987 |
| Iberia County (this page) | 143 | 44.1% | 46.2% | 9.8% | 1985 |
| St. Helena County | 139 | 33.1% | 58.3% | 8.6% | 1979 |
| Morehouse County | 136 | 33.8% | 52.9% | 13.2% | 1983 |
| East Feliciana County | 133 | 32.3% | 42.1% | 25.6% | 1980 |
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 Iberia 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 Iberia County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (143 bridges here).
- Franklin County, AR · 143 bridges
- San Francisco County, CA · 143 bridges
- Woodson County, KS · 143 bridges
- Adair County, KY · 143 bridges
Similar average build year
Nearest mean year-built outside LA (1985 here).
- Hillsborough County, FL · avg 1985 · 840 bridges
- Lancaster County, NE · avg 1985 · 661 bridges
- Nueces County, TX · avg 1985 · 528 bridges
- Grayson County, TX · avg 1985 · 513 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (143)
US0090
FairOver: LA0088
3.5 MI S OF LA 92-1, Iberia, LA
Built 2004 Load: 39.9 t ADT: 62,432
US0090
FairOver: RODERE CANAL
0.6 Mi E of LA 329, Iberia, LA
Built 1999 Load: 39.9 t ADT: 1,856
LA0682
FairOver: CREEK
0.39 MI NORTH OF LA 675, Iberia, LA
Built 1967 Load: 42.6 t ADT: 750
US0090
FairOver: DELAHOUSSAYE CANAL
0.10 MI W of LA 668, Iberia, LA
Built 1971 Load: 43.5 t ADT: 2,629
US0090/Ramp
FairOver: Delahoussaye Canal
3.33 Mi SE of LA 85, Iberia, LA
Built 1971 Load: 43.5 t ADT: 2,629
LA0674
FairOver: COMMERCIAL CANAL
1.0M SOUTH OF LA 14, Iberia, LA
Built 1991 Load: 43.5 t ADT: 8,040
US0090
FairOver: RODERE CANAL
1.7 Mi W of LA 83, Iberia, LA
Built 1969 Load: 44.5 t ADT: 10,090
US0090
FairOver: LA0014
1.86 Miles East of LA 675, Iberia, LA
Built 1969 Load: 45.4 t ADT: 31,222
US0090
FairOver: LA0014
0.6 Miles NW of LA 329, Iberia, LA
Built 1969 Load: 45.4 t ADT: 10,090
US0090
FairOver: LA00668
3.2 M SE OF LA 85, Iberia, LA
Built 2003 Load: 47.2 t ADT: 15,875
US0090
FairOver: LA00668
US 90 OVER LA 668, Iberia, LA
Built 2003 Load: 47.2 t ADT: 10,865
US0090
FairOver: DUBOIN CANAL
0.40 Mi E of LA 83, Iberia, LA
Built 1969 Load: 54.4 t ADT: 22,993
US0090
FairOver: SEGURA BRANCH
3.10 Mi SE of LA 88, Iberia, LA
Built 1965 Load: 55.3 t ADT: 29,549
US0090
FairOver: SEGURA BRANCH
1.42 Mi NW of LA 675, Iberia, LA
Built 1965 Load: 55.3 t ADT: 10,090
US0090
FairOver: ARMENCO CANAL
0.6 Mi E of La 675, Iberia, LA
Built 1965 Load: 55.3 t ADT: 30,572
US0090
FairOver: ARMENCO CANAL
1.3 Mi W of La 14, Iberia, LA
Built 1965 Load: 55.3 t ADT: 10,090
Coulee Rd.
GoodOver: Peebles Coulee
0.7 Mi. E. of La 83, Iberia, LA
Built 1972 Load: 14.6 t ADT: 78
LA0083
GoodOver: PATOUT BAYOU
4.2 Mi N. of LA 319, Iberia, LA
Built 2012 Load: 15.2 t ADT: 5,447
LA0083
GoodOver: STUMPY BAYOU
5.5 MI N OF LA 319, Iberia, LA
Built 2011 Load: 17.2 t ADT: 3,078
Chastant Rd
GoodOver: Romero Branch Canal
1.21 Mi. SE. of La 89, Iberia, LA
Built 2011 Load: 19.1 t ADT: 215
US0090
GoodOver: LA0083
6 Miles West of LA 85, Iberia, LA
Built 2004 Load: 22.4 t ADT: 10,090
LA0014
GoodOver: ARMANCO CANAL
.8 MI West of US 90, Iberia, LA
Built 1960 Load: 22.7 t ADT: 12,863
Belle Place Rd
GoodOver: Teche Bayou
0.1 Mi. N. Of La 86, Iberia, LA
Built 1988 Load: 23.7 t ADT: 3,317
US0090
GoodOver: Darnell Rd
3.08 MI E of LA 83, Iberia, LA
Built 2002 Load: 25.9 t ADT: 11,497
US0090
GoodOver: Darnell Rd
2.8 MI W of LA 85, Iberia, LA
Built 2002 Load: 25.9 t ADT: 10,090
US0090/FRONTAGE RD
GoodOver: DRAIN
0.54 Mi. West of LA 688, Iberia, LA
Built 2017 Load: 26.6 t ADT: 1,112
US0090
GoodOver: LA0083
2.1 MI E OF LA 329, Iberia, LA
Built 2004 Load: 26.6 t ADT: 21,926
LA3156
GoodOver: TECHE BAYOU
0.08 MI EAST OF LA 182, Iberia, LA
Built 2014 Load: 27.5 t ADT: 5,021
Norris Rd
GoodOver: CREEK
0.5 MI N of LA 675, Iberia, LA
Built 1966 Load: 29.0 t ADT: 749
Jefferson Island
GoodOver: Parc Perdu Bayou
3.3 Mi. W. Of US 90, Iberia, LA
Built 1960 Load: 30.8 t ADT: 2,868
US0090
GoodOver: SEGURA BRANCH CANAL
3.0 MI SE of LA 88, Iberia, LA
Built 2009 Load: 31.8 t ADT: 1,755
US0090
GoodOver: SEGURA BRANCH CANAL
3.10 Mi SE of LA 88, Iberia, LA
Built 2009 Load: 31.8 t ADT: 1,755
US0090
GoodOver: LA 329 & LDRR
2.38 Mi W of LA 83, Iberia, LA
Built 1969 Load: 31.8 t ADT: 10,090
US0090
GoodOver: CREEK
3.20 MI SE of LA 92-1, Iberia, LA
Built 1963 Load: 32.4 t ADT: 62,432
LA0680
GoodOver: Coulee Du Portage
1.33 MI NORTH OF LA 86, Iberia, LA
Built 1971 Load: 32.4 t ADT: 923
Freyou Rd
GoodOver: Bodin Coulee
1.2 Mi. South of US 90, Iberia, LA
Built 1991 Load: 32.4 t ADT: 565
Hazard Rd
GoodOver: COULEE
0.65 Mi S of La 14, Iberia, LA
Built 1984 Load: 32.4 t ADT: 1,307
LA3195
GoodOver: TETE BAYOU
0.80 Mi N of La 87, Iberia, LA
Built 2008 Load: 33.0 t ADT: 7,245
LA0083
GoodOver: BAYOU WAREHOUSE
3.6 Miles North of LA 319, Iberia, LA
Built 2009 Load: 33.4 t ADT: 3,078
US0090
GoodOver: LA 329 & LDRR
0.50 Mi E of LA 14, Iberia, LA
Built 1969 Load: 33.6 t ADT: 15,262
LA0014
GoodOver: DELCHAMBRE CANAL
0.32 MI EAST OF LA 330, Iberia, LA
Built 2001 Load: 34.0 t ADT: 12,347
US0090
GoodOver: LA 85
3.40 Mi W of LA 688, Iberia, LA
Built 2011 Load: 34.7 t ADT: 10,090
US0090
GoodOver: LA 85
6.10 MI E of LA 83, Iberia, LA
Built 2011 Load: 34.7 t ADT: 8,994
Port Rd
GoodOver: Rodere Lateral
2.50 Mi W of La 83, Iberia, LA
Built 2012 Load: 35.3 t ADT: 1,776
Seymour Migues Rd
GoodOver: Deblanc Coulee
0.7 Mi. North of LA 676, Iberia, LA
Built 1985 Load: 36.6 t ADT: 356
Choupique Rd
GoodOver: Canal
1.5 Mi. S. of La 3242, Iberia, LA
Built 1985 Load: 36.6 t ADT: 69
Grand Prairie Rd
GoodOver: Armenco Branch Canal
0.6 MI N. of La 675, Iberia, LA
Built 1991 Load: 36.9 t ADT: 229
US0090
GoodOver: ARMENCO CANAL
0.7 Mi E of La 675, Iberia, LA
Built 2005 Load: 37.3 t ADT: 1,301
US0090
GoodOver: ARMENCO CANAL
1.37 MI W of LA 14, Iberia, LA
Built 2005 Load: 37.3 t ADT: 10,598
US0090
GoodOver: LA 675
4.33 Mi SE of LA 88, Iberia, LA
Built 2009 Load: 37.6 t ADT: 29,549
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.