Total bridges
337
Public highway bridges in Ouachita County
County profile · official public datasets
Ouachita County, LA
337 public highway bridges tracked in the FHWA National Bridge Inventory: 27.9% rated Good, 59.3% Fair, 12.8% Poor.
- 337
- Public bridges
- 27.9%
- Good condition
- 12.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Ouachita County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 40th
- of 64 on Poor share
- 12.8%
- Poor-condition share
- 337
- public highway bridges
- 1981
- 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.
Ouachita County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Ouachita County ranks #40 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 12.8%). Ouachita County, Louisiana contains 337 public highway bridges. Roughly 27.9% are rated “Good,” 59.3% “Fair,” and 12.8% “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
27.9%
94 of 337 rated 7-9
Fair condition
59.3%
200 of 337 rated 5-6
Poor condition
12.8%
43 of 337 rated 4 or below
In-state Poor-share rank
#40 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 337 NBI-tracked bridges by lowest applicable component rating.
Good 27.9% (94)
Fair 59.3% (200)
Poor 12.8% (43)
Ouachita County's Poor-condition bridges carry 186,531 vehicle crossings a day
That is 5.8% of the county's reported daily bridge traffic on 12.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 4,441 crossings a day against 3,906 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 333 of 337 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
44.5% of Ouachita County's bridges have passed the 50-year mark
150 of the 337 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 27.9% 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 21.6% of the county's Poor-condition bridge traffic
ORANGE ST over I-20, built 1965, carries 40,300 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 43-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 186,531 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Ouachita County's bridges were built
337 bridges with a recorded construction year, grouped by decade
- 1920s 2
1920–1929
2 bridges
- 1930s 3
1930–1939
3 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 23
1950–1959
23 bridges
- 1960s
1960–1969
105 bridges
- 1970s
1970–1979
45 bridges
- 1980s
1980–1989
42 bridges
- 1990s 40
1990–1999
40 bridges
- 2000s 23
2000–2009
23 bridges
- 2010s
2010–2019
47 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1960s, when 105 of the county's bridges still in the inventory were built, which is 31.2% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1981) matches the Louisiana average (1982).
How Ouachita County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Ouachita County in number of bridges, with their condition splits. Its 12.8% Poor share is the 5th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1983 is in line with the group.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| St. Tammany County | 360 | 33.3% | 60.6% | 6.1% | 1976 |
| Vernon County | 341 | 57.8% | 34.6% | 7.6% | 1989 |
| Ouachita County (this page) | 337 | 27.9% | 59.3% | 12.8% | 1981 |
| Lafayette County | 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 |
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 Ouachita 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 Ouachita County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (337 bridges here).
- Placer County, CA · 337 bridges
- Tama County, IA · 337 bridges
- Cowley County, KS · 337 bridges
- Windham County, VT · 337 bridges
Similar average build year
Nearest mean year-built outside LA (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (94)
MARVIN HEAD RD
GoodOver: PRAIRION BAYOU
0.17 MI SE of LA 557, Ouachita, LA
Built 1996 Load: 18.1 t ADT: 463
RED CUT RD
GoodOver: PRARION BAYOU
2.76 MI. NE HWY. 557, Ouachita, LA
Built 1978 Load: 18.1 t ADT: 135
CADEVILLE CUTOFF
GoodOver: GUYTON CREEK
0.40 MI NW of LA 34, Ouachita, LA
Built 1997 Load: 18.1 t ADT: 307
RED CUT RD
GoodOver: RAWLS BRANCH
0.90 MI W of LA 557, Ouachita, LA
Built 1992 Load: 18.5 t ADT: 354
JACK BONNETT RD
GoodOver: ROGERS CREEK
0.68 MI SE of LA 34, Ouachita, LA
Built 1997 Load: 19.8 t ADT: 31
ADAMS ST
GoodOver: WEST PRONG YOUNGS BAYOU
0.9 MI NW of I-20, Ouachita, LA
Built 1999 Load: 22.0 t ADT: 300
CROWELL RD
GoodOver: MILTON CREEK
2.0 MILES SOUTH OF LA 34, Ouachita, LA
Built 2016 Load: 22.7 t ADT: 33
TISDALE RD
GoodOver: HURRICANE CREEK
1.82 MI SW of LA 548, Ouachita, LA
Built 1994 Load: 23.0 t ADT: 372
18TH ST AT DESIARD
GoodOver: DRAINAGE CANAL
0.7 MI NW of I-20, Ouachita, LA
Built 1996 Load: 23.3 t ADT: 100,000
OLIVER RD
GoodOver: BRYANT BRANCH
1.1 MI NW of I-20, Ouachita, LA
Built 2003 Load: 23.3 t ADT: 4,000
COONEY BONNETT RD
GoodOver: ROGERS CREEK
3.0 MI. S. OF LA 34, Ouachita, LA
Built 2018 Load: 23.9 t ADT: 183
OAK ST
GoodOver: COON CREEK
MONROE, Ouachita, LA
Built 1993 Load: 24.0 t ADT: 200
LAPINE RD
GoodOver: CPRESS CREEK
5.3 MI. S. OF LA 34, Ouachita, LA
Built 2018 Load: 24.5 t ADT: 212
COONEY BONNETT RD
GoodOver: BOGALOOSA CREEK
0.2 MI S OF LA 34, Ouachita, LA
Built 2017 Load: 24.9 t ADT: 469
RIFLE RANGE RD
GoodOver: BENNET BAYOU
UNDER SICARD OVERPASS, Ouachita, LA
Built 2011 Load: 24.9 t ADT: 400
Wall Williams Rd
GoodOver: Darbonne Bayou
0.8 Mi West of LA 143, Ouachita, LA
Built 2023 Load: 25.9 t ADT: 350
AVANT RD
GoodOver: STEEP BAYOU
0.5 MI N of US 80 E, Ouachita, LA
Built 1996 Load: 25.9 t ADT: 125
DEMOSS ROAD
GoodOver: ROGERS CREEK
2.60 MI. S. OF LA 34, Ouachita, LA
Built 2019 Load: 26.1 t ADT: 42
WEBB PIERCE RD
GoodOver: BRYANT BRANCH
1.75 MILES NORTH OF LA 34, Ouachita, LA
Built 2012 Load: 27.5 t ADT: 250
RICHARDSON RD
GoodOver: DRAIN TO BAYOU CHOUDRANT
0.25 MILES EAST OF LA 837, Ouachita, LA
Built 2011 Load: 27.9 t ADT: 180
US0080
GoodOver: CREEK
9.91 MI E of US 80, Ouachita, LA
Built 2009 Load: 28.2 t ADT: 3,275
CAPLES RD
GoodOver: CHENIERE CREEK
1.72 MI S of LA 546, Ouachita, LA
Built 1992 Load: 28.2 t ADT: 159
GUYTON SWAMP RD
GoodOver: MILL CREEK
1.55 MI NW of LA 34, Ouachita, LA
Built 1992 Load: 28.5 t ADT: 74
RICHARDSON RD
GoodOver: DRAIN TO BAYOU CHOUDRANT
0.75 MILES EAST OF LA 837, Ouachita, LA
Built 2011 Load: 29.2 t ADT: 180
CAPLES RD
GoodOver: CLARK CREEK
2.33 MILES EAST OF LA 546, Ouachita, LA
Built 2015 Load: 29.5 t ADT: 573
Osa Avant Rd
GoodOver: Eureka Creek
0.2 Mi N. of La 837, Ouachita, LA
Built 2020 Load: 29.5 t ADT: 297
IKE KELLY RD
GoodOver: LAPINE BAYOU
1.75 MI. EAST OF LA 557, Ouachita, LA
Built 2013 Load: 29.5 t ADT: 99
SAM HEAD RD
GoodOver: CR
0.77 MI S of LA 34, Ouachita, LA
Built 2010 Load: 30.5 t ADT: 100
CADEVILLE LODGE RD
GoodOver: GUYTON CREEK
0.20 MI. E. OF LA 183, Ouachita, LA
Built 2019 Load: 30.7 t ADT: 315
RICHWOOD RD #2
GoodOver: LTI CREEK
0.5 MILES WEST OF US 165, Ouachita, LA
Built 2015 Load: 30.7 t ADT: 3,111
US0080
GoodOver: Union Pacific Railroad
0.15 Mi. N. of LA 139, Ouachita, LA
Built 2019 Load: 32.4 t ADT: 17,683
COX ST
GoodOver: BLACK BAYOU LATERAL
0.4 MILES EAST OF LA 617, Ouachita, LA
Built 2014 Load: 32.4 t ADT: 300
DEBORAH DR.
GoodOver: HOGS BAYOU
2.4 MI NW OF US 165, Ouachita, LA
Built 2017 Load: 32.4 t ADT: 1,686
MATT HAMMONDS RD
GoodOver: HOGWASH CREEK
1.8 MI N of US 80 E, Ouachita, LA
Built 2005 Load: 32.4 t ADT: 300
HENRY MARTIN RD
GoodOver: DRAIN TO CYPRESS CREEK
1.63 MI E of LA 557, Ouachita, LA
Built 1996 Load: 32.4 t ADT: 100
CYPRESS SCHOOL RD
GoodOver: CYPRESS CREEK
0.014 MI N of LA 548, Ouachita, LA
Built 1996 Load: 32.4 t ADT: 310
TOWER DRIVE
GoodOver: YOUNGS BAYOU
1.1 MI NW of I-20, Ouachita, LA
Built 2003 Load: 32.4 t ADT: 4,000
OLD ARKANSAS RD
GoodOver: CHYOCA CREEK
4.0M NW CHENIERE, Ouachita, LA
Built 1993 Load: 32.4 t ADT: 67
STUBBS-RITCHIE RD
GoodOver: PATRICK BAYOU
0.9 MI E of LA 594, Ouachita, LA
Built 1993 Load: 32.4 t ADT: 686
LA0546
GoodOver: ICG RAILROAD
3.8 MI. N. of LA 838, Ouachita, LA
Built 2000 Load: 32.7 t ADT: 6,382
STUBBS-VINSON RD
GoodOver: PATRICK BAYOU
2.1 MI N of US 80 E, Ouachita, LA
Built 2004 Load: 32.7 t ADT: 1,100
WEEMS RD
GoodOver: COCKERELL CREEK
0.18 MI E OF LA 151, Ouachita, LA
Built 2016 Load: 32.9 t ADT: 30
WILL BROWN RD
GoodOver: SOUTH CHENIERE CREEK
0.9 MI S OF LA 34, Ouachita, LA
Built 2016 Load: 32.9 t ADT: 70
RED CUT LOOP RD
GoodOver: PRAIRION BAYOU
4.0 MILES EAST OF LA 557, Ouachita, LA
Built 2011 Load: 33.4 t ADT: 200
RED CUT LOOP RD
GoodOver: PRAIRION BAYOU
4.0 MILES EAST OF LA 557, Ouachita, LA
Built 2011 Load: 33.4 t ADT: 200
WINNFIELD RD
GoodOver: CHENIERE CREEK
1.5 MILES NORTH OF LA 34, Ouachita, LA
Built 2012 Load: 33.4 t ADT: 350
GARRETT RD
GoodOver: YOUNGS BAYOU
GARRET ROAD, Ouachita, LA
Built 1982 Load: 33.4 t ADT: 600
NUTLAND RD
GoodOver: AIRPORT CANAL
NUTLAND ROAD S OF MO, Ouachita, LA
Built 1983 Load: 33.4 t ADT: 800
PINE BLUFF RD
GoodOver: DRAIN TO CYPRESS CREEK
2.1 MI S. HWY. 557, Ouachita, LA
Built 1985 Load: 33.6 t ADT: 431
WOOD ST
GoodOver: CROCODILE CR
1.6 MI W OF US 165, Ouachita, LA
Built 2017 Load: 33.7 t ADT: 188
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.