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Trip from St. Louis, MO to Affton, MO

Data updated 2 hours ago

Drive Time

19m

Distance

10.9 mi

18 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$2

one way

EV Charging

Excellent

20 DC fast

Best Time to Leave

4 AM
0h 18m ★
6 AM
0h 19m
8 AM
0h 23m
10 AM
0h 20m
12 PM
0h 20m
3 PM
0h 21m
5 PM
0h 22m
8 PM
0h 18m ★

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Unincorporated community in Missouri, U.S.

Affton, MO

Wikimedia Commons

Trip Overview

This quick 10.9-mile drive from St. Louis, MO to Affton, MO is easily manageable as a single-day trip, taking just about 19 minutes. With a fuel cost estimated at $2, it's an economical option for a short journey within the Midwest. The route primarily utilizes I-55, South Tucker Boulevard, and Weber Road, offering a mixed driving experience. Given its brevity, you won't need an overnight stay, allowing for maximum flexibility in your schedule. It's a straightforward connection between two points in Missouri, perfect for a quick errand or a short hop.

Trip Pace

Same-day drive is realistic

A same-day return is realistic if you keep stops short.

Break Rhythm

0 planned breaks

A short stop every 2 to 3 hours is enough for this drive.

Midpoint

5.4 miles from St. Louis, MO

A natural place for your longest stop of the day , about 9m into the drive .

Loading map...

Drive Character

The character of this drive is a mix, with 59% of the journey on highways. You'll experience a longest stretch of 6.4 miles on I-55, which provides a consistent, faster-paced segment. As you transition off the interstate and onto local roads like South Tucker Boulevard and Weber Road, expect a change in pace and traffic patterns. This change from efficient highway driving to more localized streets defines the drive's personality, making it a blend of steady cruising and neighborhood navigation.

Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 15 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 55 is the longest continuous segment at about 6.4 miles.

How Hard Is This Drive?

This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 9 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near South Tucker Boulevard.

Route Complexity 6/10

Moderate - straightforward overall, but long enough or busy enough to require pacing

This drive requires moderate attention. Across 10.9 miles you will encounter 9 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: near the start (South Tucker Boulevard): Lane positioning matters here; at 1.7 miles: Lane positioning matters here; at 8.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.

Critical Maneuvers

5 of 9 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

4
0 mi into trip | ~0m in | South Tucker Boulevard

Turn left onto South Tucker Boulevard

Lane positioning matters here

Use the left lane.
7
1.7 mi into trip | ~4m in

Take the ramp toward I 55 South: Memphis

Lane positioning matters here

Use the left lane. Toward I 55 South: Memphis
7
8.2 mi into trip | ~12m in

Take the exit toward Bayless Avenue

Exit ramp - move to the correct lane early. Lane positioning matters here

Use the slight right lane. Exit 201A Toward Bayless Avenue
8
8.3 mi into trip | ~12m in

Keep slight right at fork toward Bayless Avenue

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight right lane. Toward Bayless Avenue
5
10.8 mi into trip | ~18m in

Turn right

Navigation decision point

Main Roads

Road Distance Duration
I 55 6.4 mi 8m
South Tucker Boulevard 1.3 mi 3m
Weber Road 1.3 mi 2m
Gravois Road 1 mi 2m
Gravois Avenue 0.3 mi <1m
Bayless Avenue 0.2 mi <1m
Tesson Ferry Road <0.1 mi <1m
Market Street <0.1 mi <1m
Longest stretch: I 55 — 6.4 mi, about 8m

Turn-by-Turn Driving Directions

Step-by-step road directions between St. Louis, MO and Affton, MO.

1

Start on Market Street

86 ft · 4 sec · Market Street
2

Turn left onto South Tucker Boulevard

1.3 mi · 3 min · South Tucker Boulevard
Use the left lane.
3

Turn straight onto Gravois Avenue

0.3 mi · 46 sec · Gravois Avenue
4

Take the ramp

0.1 mi · 15 sec
Toward I 55 South: Memphis Use the left lane.
5

Merge onto I 55

6.4 mi · 8 min · I 55
6

Take the exit

0.1 mi · 18 sec
Exit 201A Toward Bayless Avenue Use the slight right lane.
7

Keep slight right at fork

178 ft · 5 sec
Toward Bayless Avenue Use the slight right lane.
8

Turn straight onto Bayless Avenue

0.2 mi · 22 sec · Bayless Avenue
9

Continue on Weber Road

1.3 mi · 2 min · Weber Road
10

Turn left onto MO 30

1.0 mi · 2 min · Gravois Road
11

Turn left onto MO 21

237 ft · 14 sec · Tesson Ferry Road
Use the left lane.
12

Turn right

228 ft · 16 sec
13

Turn slight right

65 ft · 4 sec
14

Turn right

87 ft · 6 sec
15

Arrive at destination

Trip Plan

For this short 10.9-mile trip, timing is flexible, but departing outside of peak rush hour will ensure the quickest 19-minute journey. There are no specific stops recommended for this route, so you can drive straight through. Keep an eye on your fuel gauge, though the estimated $2 cost suggests it's a very minor expense. The longest continuous stretch on I-55 is 6.4 miles, so plan your exit accordingly if you need to adjust your route slightly. This short drive offers the advantage of being able to leave and return on your own schedule.

Morning Departure

Leave by 9 AM and you'll arrive before lunch.

Evening Departure

Even a 4 PM departure gets you there before dark in summer.

You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 5.4 miles from St. Louis, MO, or about 9m into the drive.
The longest continuous stretch on this route runs about 6.4 miles.

This is a comfortable same-day trip.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 10.9 miles or 19m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 5.4 miles or 9m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 15m

Traffic, exits, and arrival timing usually matter more near Affton, MO than in the middle of the route.

Before You Leave

+

Open the route before leaving St. Louis, MO so your first major turns are already loaded.

+

Leave with enough water and a charging cable within reach, not packed away.

+

Check your fuel range against the first long segment, especially if you are starting outside city service areas.

Day 1

Settle into the route from St. Louis, MO

This is one driving day of about 10.9 miles and 19m.

Your first comfortable stop window is around 80 miles from St. Louis, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
You may only need one short stretch stop if conditions stay smooth.
The longest stretch is on I 55 for about 6.4 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 5.4 mi from St. Louis, MO · 9m into the drive

archaeological site near East St. Louis, Illinois, USA

Mid-route town

Meal stop

Cahokia, IL

5 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

Cahokia, IL

Fuel and coffee

A short stop after about 10.9 miles helps settle the day before fatigue starts building.

East Saint Louis, IL

Meal break

The midpoint is around 5.4 miles from St. Louis, MO, which is a good place for a longer meal and fuel stop.

Arriving in Affton, MO

The final approach into Affton, MO usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Affton, MO.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

National Parks Near This Route

Worth a detour if your schedule allows.

Gateway Arch National Park

Gateway Arch National Park

National Park

Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, a...

0 mi from route ~1 min detour $19
View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

Fuel & Cost

Regular Gas

$1.70 one way

$3.41 round trip

$3.97/gal 25.4 MPG avg 4 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.36 $1.87 $3.74
premium $4.89 $2.10 $4.20
diesel $5.61 $2.41 $4.81

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$2

Meals

$25–$50

Total

$27–$52

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 3.8 kg one way. Prices: EIA weekly data, 2026-04-13.

EV Charging Along Route

20 DC fast chargers · Coverage: excellent

Bar K - Tesla Supercharger

St. Louis, MO

Tesla

12 DCFC

South County Center - Tesla Supercharger

St. Louis, MO

Tesla

10 DCFC

State Street Shopping Center

East St Louis, IL

eVgo Network

6 DCFC

Casino Queen STL

East Saint Louis, IL

eVgo Network

6 DCFC

Pilot Travel Center 313

East St. Louis, IL

eVgo Network

6 DCFC

IKEA Store 410 (St. Louis, MO)

St. Louis, MO

Electrify America

6 DCFC

Lowes of S. Saint Louis, MO

St. Louis, MO

eVgo Network

6 DCFC

Broadway Ford Truck Sales

St. Louis, MO

FORD_CHARGE

4 DCFC

ChargePoint Network: 6 eVgo Network: 6 FORD_CHARGE: 2 Tesla: 2 EV Connect: 1 Electrify America: 1 SYNERGEV: 1 Non-Networked: 1

Station data from NREL Alternative Fuel Stations database.

Driving Electric?

About $1 in charging · 0 stops · 75% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 3.3 0 $1.14 $0.52
Efficient EV 2.7 0 $0.95 $0.44
EV Truck/SUV 4.4 0 $1.53 $0.70

Gas CO2

4 kg

EV CO2

1 kg (75% 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.

Forecast data refreshed 5 days ago

Origin

St. Louis, MO

Afternoon in St. Louis on Tuesday

Local time

4:31 PM

CDT

Current temp

59°F

Unavailable

Live forecast

Destination

Affton, MO

Afternoon in Affton on Tuesday

Local time

4:31 PM

CDT

Current temp

46°F

Unavailable

Live forecast

Seasonal Notes

Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.

Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.

Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.

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

13 degrees cooler at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

19m 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.

Frequently Asked Questions

The drive from St. Louis, MO to Affton, MO covers 10.9 miles and takes about 19m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 55, South Tucker Boulevard, Weber Road. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 5.4 miles from St. Louis, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $1.70 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This drive requires moderate attention. Across 10.9 miles you will encounter 9 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: near the start (South Tucker Boulevard): Lane positioning matters here; at 1.7 miles: Lane positioning matters here; at 8.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
The route from St. Louis, MO to Affton, MO does not surface many named destination signs beyond the main corridor.

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