Total bridges
270
Public highway bridges in Bossier County
County profile · official public datasets
270 public highway bridges tracked in the FHWA National Bridge Inventory: 30% rated Good, 55.2% Fair, 14.8% Poor.
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Bossier County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
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.
According to the Federal Highway Administration's 2024 National Bridge Inventory, Bossier County ranks #45 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 14.8%). Bossier County, Louisiana contains 270 public highway bridges. Roughly 30% are rated “Good,” 55.2% “Fair,” and 14.8% “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.
Total bridges
270
Public highway bridges in Bossier County
Good condition
30%
81 of 270 rated 7-9
Fair condition
55.2%
149 of 270 rated 5-6
Poor condition
14.8%
40 of 270 rated 4 or below
In-state Poor-share rank
#45 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Share of 270 NBI-tracked bridges by lowest applicable component rating.
That is 6.6% of the county's reported daily bridge traffic on 14.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 5,991 crossings a day against 7,008 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 270 of 270 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
88 of the 270 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 30% 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.
I0020 over STL&SW-KCS RR/WESTERFIEL, built 1966, carries 69,892 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 40-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 239,657 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
270 bridges with a recorded construction year, grouped by decade
1920–1929
1 bridges
1930–1939
10 bridges
1940–1949
6 bridges
1950–1959
13 bridges
1960–1969
46 bridges
1970–1979
62 bridges
1980–1989
37 bridges
1990–1999
25 bridges
2000–2009
29 bridges
2010–2019
31 bridges
2020–2029
10 bridges
What this shows Construction peaked in the 1970s, when 62 of the county's bridges still in the inventory were built, which is 23% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1983) matches the Louisiana average (1982).
The 5 Louisiana counties nearest Bossier County in number of bridges, with their condition splits. Its 14.8% Poor share is the 5th-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1980 is in line with the group.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Washington County | 285 | 44.2% | 44.2% | 11.6% | 1979 |
| Acadia County | 282 | 42.9% | 48.2% | 8.9% | 1978 |
| Bossier County (this page) | 270 | 30% | 55.2% | 14.8% | 1983 |
| Vermilion County | 261 | 45.6% | 43.3% | 11.1% | 1985 |
| Livingston County | 253 | 43.5% | 47% | 9.5% | 1978 |
| Jefferson Davis County | 240 | 12.1% | 69.2% | 18.8% | 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 Bossier County's. Source: FHWA National Bridge Inventory, 2024 release.
Two NBI-derived peer sets for Bossier County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Nearest county inventories outside LA (270 bridges here).
Nearest mean year-built outside LA (1983 here).
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Over: Collinsburg Creek
2.5 MI. SW OF LA 3, Bossier, LA
Over: CLARKE BAYOU
2.28 MI EAST OF LA 157, Bossier, LA
Over: CREEK
1.36 MI EAST OF US 71, Bossier, LA
Over: I-220
2.8 MI EAST OF LA 3105, Bossier, LA
Over: BENOIT BAYOU
0.2 MI E. OF HWY. 3, Bossier, LA
Over: US 71 KCSRR RAMP SW
0.4 MI S OF LA 72, Bossier, LA
Over: DRAIN
3.11 MI NORTH OF LA 2, Bossier, LA
Over: CANEY BRANCH
.78 MI EAST OF LA 614, Bossier, LA
Over: DRAIN
.71 MI NORTH OF LA 2, Bossier, LA
Over: Clark Bayou Trib
1.5 MILES EAST OF LA 157, Bossier, LA
Over: CLARKE BAYOU
.29 MI EAST OF LA 614, Bossier, LA
Over: LITTLE CYPRESSBAY
.40 MI EAST OF LA 3, Bossier, LA
Over: BEAR BRANCH
3.73 MI NORTH OF LA 160, Bossier, LA
Over: Caney Creek
3.5 MI S OF HWY 160, Bossier, LA
Over: MACKS BAYOU
.98 MI EAST OF LA 72, Bossier, LA
Over: Bodcau Bayou Trib
4.5 MI W OF LA 157, Bossier, LA
Over: Lil Cypress Bayou
3.1 Mi. SE of LA 3, Bossier, LA
Over: Boggs Creek
4.0 M N OF LA 2, Bossier, LA
Over: STILLHOUSE BAYOU
8.06 MI NORTH OF LA 2, Bossier, LA
Over: FLAT RIVER
.37 MI EAST OF US 71, Bossier, LA
Over: RED RIVER @ TEXAS ST.
.01 MI EAST OF LA 1, Bossier, LA
Over: FiFi Bayou Trib
0.2 MI SOUTH OF US 80, Bossier, LA
Over: Ivan Lake
0.7 MI N OF HWY 160, Bossier, LA
Over: FLAT BRANCH
2.65 MI NORTH OF LA 160, Bossier, LA
Over: CYPRESS BAYOU
2.82 MI NORTH OF LA 160, Bossier, LA
Over: CYPRESS BAYOU RLF
3.16 MI NORTH OF LA 160, Bossier, LA
Over: Horseshoe Creek
2.5 MILES WEST OF LA 157, Bossier, LA
Over: COLLINSBURG CREEK
4.27 MI NORTH OF LA 160, Bossier, LA
Over: Hogskin Lake Creek
0.1 MI E OF LA 612, Bossier, LA
Over: CYPRESS BAYOU TRIBUTARY
1.71 MI NORTH OF LA 2, Bossier, LA
Over: RED BRANCH
.9 MI NORTH OF LA 157, Bossier, LA
Over: FLAT RIVER
1.1 MI E OF US 71(LA0612), Bossier, LA
Over: Flat River Bayou
3.2 MI E OF HWY 3, Bossier, LA
Over: TRAFFIC STREET
.36 MI EAST LA 1, Bossier, LA
Over: TRAFFIC STREET
.36 MI EAST LA 1, Bossier, LA
Over: Bodcau Bayou Trib
3 MI N OF HWY 157, Bossier, LA
Over: CREEK
.09 MI EAST OF LA 3, Bossier, LA
Over: RED CHUTE BAYOU
3.16 MI E JCT US 71-LA527, Bossier, LA
Over: DRAIN
.19 MI EAST OF LA 3, Bossier, LA
Over: CLARKE BAYOU REL
.18 MI EAST OF LA 614, Bossier, LA
Over: RED RIVER/LA 3049/538
.01 MI EAST OF LA 3049, Bossier, LA
Over: TRIB. TO MACKS BAYOU
1.3 MI EAST OF LA 3105, Bossier, LA
Over: Spring Branch
.02 MI E OF FV POINT RD., Bossier, LA
Over: BAYOU
.8 MI EAST OF LA 157E, Bossier, LA
Over: CYPRESS BAYOU
2.6 MI EAST OF LA 157E, Bossier, LA
Over: CANEY CREEK
4.8 MI EAST OF LA 157E, Bossier, LA
Over: 1-20 US 71 KCS RR
0.2 MI S OF I-20/US 71, Bossier, LA
Over: LITTLE CYPRESS BAYOU
6.95 MI NORTH OF LA 160, Bossier, LA
Over: US 71 KCS RR RAMP SW
0.6 M E OF DIAMOND JACK B, Bossier, LA
Over: ICG RR
.5 MI EAST OVER LA 72, Bossier, LA
Read our methodology - how this data is sourced, computed, and verified.
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.