St. Charles County, LA
82 public highway bridges
St. Charles County Bridge Snapshot
St. Charles County, Louisiana contains 82 public highway bridges in the FHWA National Bridge Inventory. Roughly 48.8% are rated “Good,” 19.5% “Fair,” 1.2% “Poor,” and 1.2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.
Inspections in LA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.
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
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |