St. Charles County, LA
82 public highway bridges
St. Charles County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Charles County, Louisiana contains 82 public highway bridges. Roughly 48.8% are rated “Good,” 19.5% “Fair,” and 1.2% “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.
Condition Distribution
All Bridges (82)
US0090
UnknownOver: US 90 TURNAROUNDS
4.9 MI. E. OF INT. WITH L, St. Charles, LA
US0090
UnknownOver: US 90 TURNAROUNDS
4.9 MI. E OF INT. WITH LA, St. Charles, LA
I0310
UnknownOver: LA 3127 & I-310
2.9 MI EAST OF LA 3160, St. Charles, LA
I0010
UnknownOver: BONNET CARRE SPILLWAY
1.9 MI EAST OF I-55, St. Charles, LA
I0310
UnknownOver: US 61/RR/SWAMP/LA 626
0.41 M SOUTH OF I-10, St. Charles, LA
I0310
UnknownOver: I-10/I-310/SWAMP
0.4 M SOUTH OF I-10, St. Charles, LA
I0310
UnknownOver: US 61/RR/SWAMP/LA 626
0.41 M SOUTH OF I-10, St. Charles, LA
I0310
UnknownOver: I-310 RAMP OVER I-10
0.01 M NORTH OF I-10 WB, St. Charles, LA
I0310
UnknownOver: RAMPS/US 61
0.2 M NORTH OF US 61, St. Charles, LA
I0310
UnknownOver: RAMPS/US 61
0.2 1M NORTH OF US 61, St. Charles, LA
I0310
UnknownOver: RAMPS/RR/CANAL/US 61
0.25 M SOUTH OF US 61, St. Charles, LA
I0310
UnknownOver: RAMPS/RR/CANAL/US 61
0.10 M NORTH OF US 61, St. Charles, LA
I0310
UnknownOver: ICG.RR, RAMP E,F,&H, LA4
5.14 MI S I-10, I-310 JCT, St. Charles, LA
I0310
UnknownOver: ICG RR YARD,RAMPS F & H
5.35 MI S JCT I-10, St. Charles, LA
I0310
UnknownOver: RAMP 'F'
5.43 MI S JCT I-10, St. Charles, LA
I0310
UnknownOver: RAMPS E,F,G, & H
5.63 MI S JCT I-10, St. Charles, LA
I0310
UnknownOver: MISSISSIPPI RIVER
4.4 MI S OF US 61, St. Charles, LA
I0310
UnknownOver: M. P. RR
4.9 MI S OF US 61, St. Charles, LA
I0310
UnknownOver: RAMP "A"
.2 MI SOUTH OF LA 18, St. Charles, LA
I0310
UnknownOver: RAMP"C" FROM I 310 SB
.36 MI SOUTH OF LA 18, St. Charles, LA
I0310
UnknownOver: RAMP"C"FROM I 310 SB
.36 MI SOUTH OF LA 18, St. Charles, LA
I0310
UnknownOver: I-310 OVER LA 3127
1.57 MI. N. OF US 90, St. Charles, LA
I0310
UnknownOver: S.P. R.R. & LA-631
.50 MI N. OF US 90, St. Charles, LA
I0310
UnknownOver: S.P. R.R. & LA 631
.5 MI NORTH OF US 90, St. Charles, LA
I0310
UnknownOver: S.P. RR. & LA 631
0.40 MI. N. OF US 90, St. Charles, LA
LA0631
FairOver: BAYOU DESALLEMAND
.4 MI WEST OF LA 632, St. Charles, LA
US0061
FairOver: BONNET CARRE
.7 MI WEST OF LA 48, St. Charles, LA
US0090
FairOver: SELLERS CANAL
5.6 MI EAST OF LA 633, St. Charles, LA
US0090
FairOver: B DESALLEMANDS
.4 MI WEST OF LA 362, St. Charles, LA
US0090
FairOver: B DESALLEMANDS
.4 MI WEST OF LA 362, St. Charles, LA
US0090
FairOver: DRAIN CANAL
4.3 MI EAST OF LA 633, St. Charles, LA
US0090
FairOver: SELLERS CANAL
5.6 MI EAST OF LA 633, St. Charles, LA
I0310
FairOver: DRAIN CANAL
0.8 MILES SOUTH OF HALES, St. Charles, LA
US0090
FairOver: DRAIN CANAL
4.3 MI EAST OF LA 633, St. Charles, LA
LA3127
FairOver: UNION CARBIDE CANAL
.6 MI EAST OF LA 3142, St. Charles, LA
US0061
FairOver: BONNET CARRE SPILLWAY
.7 MI WEST OF LA 48, St. Charles, LA
I0010
FairOver: SWAMP (EMERGENCY X-OVER)
3.0 MI WEST OF I-310, St. Charles, LA
I0010
FairOver: BONNET CARRE SPILLWAY
1.9 MI EAST OF I-55, St. Charles, LA
LA0306
FairOver: GRAND BAYOU
2.0 MI SOUTH OF LA 632, St. Charles, LA
LA3127
FairOver: VIAL CANAL
.9 MI EAST OF LA 3160, St. Charles, LA
LA3127
FairOver: EIGHTY ARPENT CANAL
3.6 MI EAST OF LA 3160, St. Charles, LA
W HEATHER DR
GoodOver: COUSIN'S CANAL
0.3 MI SOUTH OF US 90, St. Charles, LA
BIRCH ST
GoodOver: COUSIN'S CANAL
0.7 MI SOUTH OF US 90, St. Charles, LA
I0310
GoodOver: GROUND
0.01 M FROM I-10, St. Charles, LA
US0090
GoodOver: B CROCODILE
1.0 MI EAST OF LA 306, St. Charles, LA
I0310
GoodOver: SWAMP
0.1 M NORTH OF US 61, St. Charles, LA
I0310
GoodOver: SWAMP
0.15 M NORTH OF US 61, St. Charles, LA
I0310
GoodOver: RR/CANAL
0.10 M SOUTH OF US 61, St. Charles, LA
I0310
GoodOver: M P RR
.2 MI SOUTH OF LA 18, St. Charles, LA
I0310
GoodOver: M P RR
.05 MI SOUTH OF LA 18, St. Charles, LA
Read our methodology - how this data is sourced, computed, and verified.
Related
Every figure on PlainBridge 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.