Origin
Marrero, LA
Late night in Marrero on Tuesday
Local time
3:46 AM
CDT
Current temp
84°F
Unavailable
Live forecast
Trip from Marrero, LA to Slidell, LA
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
51m
Distance
40.6 mi
65 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 47m
★
6 AM
0h 51m
8 AM
1h 0m
10 AM
0h 54m
12 PM
0h 53m
3 PM
0h 55m
5 PM
0h 59m
8 PM
0h 49m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Marrero, LA
Wikimedia Commons
Slidell, LA
Wikimedia Commons
Trip Overview
If you are planning to travel from Marrero to Slidell, you are looking at a straightforward 40.6-mile trek across Southeast Louisiana. This drive typically takes about 51 minutes, making it a perfect candidate for a single-day trip that requires no overnight stops. Your route will primarily utilize the Westbank Expressway, I-10, and the Old Spanish Trail to navigate between these two points. Budgeting roughly $6 for fuel is sufficient for the trip, keeping your transit costs low. Since both locations are within the same region, you will experience a consistent landscape rather than a drastic shift in scenery. This is an efficient, highway-focused journey that prioritizes speed and direct access over leisurely wandering.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 10 | 28.6 mi | 32m |
| Westbank Expressway | 5.8 mi | 7m |
| Old Spanish Trail | 1.7 mi | 2m |
| Pontchartrain Expressway | 1.7 mi | 1m |
| Sergeant Alfred Drive | 0.7 mi | 1m |
| Crescent City Connection | 0.6 mi | <1m |
| Barataria Boulevard | 0.5 mi | 1m |
| 3rd Street | 0.2 mi | <1m |
Longest stretch:
I 10
— 28.6 mi, about 32m
Turn-by-Turn Driving Directions
Step-by-step road directions between Marrero, LA and Slidell, LA.
1
Start on LA 18
346 ft
·
12 sec
·
Barataria Boulevard
2
Continue on LA 18
0.4 mi
·
1 min
·
Barataria Boulevard
3
Turn left onto Westbank Expressway
0.3 mi
·
33 sec
·
Westbank Expressway
Use the straight / left lanes.
4
Take the ramp
0.2 mi
·
31 sec
Toward US 90 Business East: Harvey Canal Bridge
5
Merge onto US 90 BUS
5.5 mi
·
7 min
·
Westbank Expressway
Use the straight / slight left lanes.
6
Continue on US 90 BUS
0.6 mi
·
57 sec
·
Crescent City Connection
7
Continue on US 90 BUS
1.7 mi
·
1 min
·
Pontchartrain Expressway
Use the straight / slight right lanes.
8
Take the exit
0.3 mi
·
40 sec
Exit 13C
Toward I 10 East: Slidell
Use the slight right lane.
9
Merge onto I 10
29 mi
·
32 min
·
I 10
Toward I 10 East: Slidell
Use the straight / slight right lanes.
10
Take the exit
0.2 mi
·
29 sec
Exit 263
Toward LA 433: Old Spanish Trail
Use the slight right lane.
11
Turn left onto LA 433
1.7 mi
·
2 min
·
Old Spanish Trail
12
Turn sharp right onto Sergeant Alfred Drive
0.7 mi
·
1 min
·
Sergeant Alfred Drive
13
Continue on 3rd Street
0.2 mi
·
22 sec
·
3rd Street
14
Turn left onto Bouscaren Street
220 ft
·
9 sec
·
Bouscaren Street
15
Arrive at destination
Bouscaren Street
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
20 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 40.6 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 20.3 miles from Marrero, LA, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 85 decision points cluster between mile 0.5 and 37.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.5 mi into trip
|
~1m in
|
Westbank Expressway
Turn left onto Westbank Expressway
Lane positioning matters here
Use the straight / left lanes.
5
1 mi into trip
|
~2m in
|
US 90 BUS / Westbank Expressway
Merge onto US 90 BUS / Westbank Expressway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight left lanes.
7
8.8 mi into trip
|
~12m in
Take the exit toward I 10 East: Slidell
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 13C
Toward I 10 East: Slidell
6
9.1 mi into trip
|
~13m in
|
I 10
Merge onto I 10 toward I 10 East: Slidell
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 10 East: Slidell
7
37.8 mi into trip
|
~46m in
Take the exit toward LA 433: Old Spanish Trail
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 263
Toward LA 433: Old Spanish Trail
Fuel & Cost
Regular Gas
$6.13 one way
$12.26 round trip
$3.84/gal
25.4 MPG avg
14 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.21 | $6.73 | $13.46 |
| premium | $4.56 | $7.29 | $14.57 |
| diesel | $5.61 | $8.96 | $17.93 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 14.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 12.2 | 0 | $4.26 | $1.95 |
| Efficient EV | 10.2 | 0 | $3.55 | $1.62 |
| EV Truck/SUV | 16.2 | 0 | $5.68 | $2.60 |
Gas CO2
14 kg
EV CO2
5 kg (64% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Slidell, LA
Late night in Slidell on Tuesday
Local time
3:46 AM
CDT
Current temp
86°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
2 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
51m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
Expect a highly efficient commute, as 89% of this 40.6-mile trip is spent on highways. The character of the road is defined by its focus on movement, with a significant 28.6-mile stretch dedicated entirely to I-10. You will start on the Westbank Expressway before transitioning onto the interstate, where you can maintain a steady pace for the majority of your time behind the wheel. While the Old Spanish Trail adds a bit of local flavor to the mix, the overall experience remains a utilitarian highway-focused drive. You should be prepared for a fast-paced environment where the road conditions change little from the start in Marrero to your arrival in Slidell.
89% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 28.6 mi on I 10.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on I 10 and Westbank Expressway. You will hit about 8 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.5 miles in near Westbank Expressway.
Driving Effort
6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 40.6 miles you will encounter 8 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.5 miles (Westbank Expressway): Lane positioning matters here; at 1 miles (US 90 BUS / Westbank Expressway): Merge point - match speed before joining. Lane positioning matters here; at 8.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
11 ft
-4 ft
Total Climb
33 ft
Total Descent
28 ft
Highest Point
11 ft
~37.7 mi in
Elevation Range
16 ft
About the Cities
Arriving in Slidell, LA
Full guide →Slidell is a small city in St. Tammany Parish, one of the Florida Parishes of Louisiana. Named after the statesman, John Slidell, this town is a growing suburb of the New Orleans area. Since Hurricane Katrina, Slidell and its surrounding areas have seen a tremendous population surge.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 51m. Total distance: 40.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
51m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (89%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 28.6 miles on I 10. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Slidell, LA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.5 miles (Westbank Expressway): Lane positioning matters here; at 1 miles (US 90 BUS / Westbank Expressway): Merge point - match speed before joining. Lane positioning matters here; at 8.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Slidell, LA before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and USGS 3DEP for elevation. See our methodology for refresh cadence and limitations.
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