MileCheck

iOS · Android · 50 US states

The only mile-marker app with live DOT integrations.

Real-time mile markers in all 50 US states. Live road alerts from 42 state DOTs. Navigate to any mile marker on the map — because a milepost isn't just a number on a sign. It's how help finds you.

🚗 Now on CarPlay & Android Auto

Get on iOS → Get on Android →

Your mile marker is always free. Premium — map, live alerts, trip tools — $9.99/yr or $1.99/mo, 7-day free trial.

Real-time mile markers (50 states) · Live DOT alerts (42 states) · Border wait times · Seattle bridge status · Crosswind warnings · CarPlay & Android Auto · Works offline

Mile markers
50
US states
Always free
Live DOT alerts
42
of 50 US states
New states added weekly toward all 50. Tracking state-by-state — see the map ↓
Premium · $9.99/yr
Rating
5.0★
and a 0.00% crash rate
“The app I didn’t know I needed and now cannot live without!”
★★★★★  dayjules, App Store

What you get

Far more than a mile marker.

STANDARD

What you’d expect.

Your nearest mile marker, live (all 50 states) · live DOT alerts · works offline · live map · GPS speed.

BONUS

The extras.

Border wait times · Seattle bridge status · crosswind warnings · trip logging · share your location · navigate to any milepost.

ONLY MILECHECK

What no one else has.

The only mile-marker app on both iOS & Android · the only one with live, nationwide DOT integrations (42 states) · the only CarPlay & Android Auto app that shows your mile marker.

See the mile markers, live.

50 states. 42 live DOT feeds and growing.

Loading mile markers…

Our story

Why we built MileCheck.

My dad took a seasonal job driving snowplows for ODOT. Before long I realized how much of that job revolves around mile markers — every radio call, every crash report, every road closure. They’re how crews track where sand, salt, and brine have been applied, and how dispatchers coordinate a response.

If you call for help on a mountain highway, how do you tell anyone exactly where you are? That’s what mile markers are for. Most drivers pass hundreds of them without a second thought. But the people who keep roads open, respond to emergencies, and help stranded motorists rely on them every day.

There was one app for this, but it only worked on iPhone. My dad uses Android. So I built him a web app that showed his nearest Oregon mile marker from GPS. My mom, my sister, and I spent hours driving highways and back roads, checking numbers, making adjustments. I still remember the first time the number changed at exactly the right moment.

My dad showed it to coworkers. They showed it to others. Feedback came from truck drivers, road crews, first responders, and everyday drivers. Nearly every feature in MileCheck exists because someone on a real road asked for it.

What started as a simple tool for my dad turned out to be useful for a lot of other people, too.

MileCheck app icon
MileCheck iOS · Android · CarPlay · Android Auto

Find your milepost free — it’s how help finds you.

Get the app →
Mile tab showing nearest mile marker
Mile Tab
Your nearest mile marker.
Accurate to one-tenth of a mile, live as you drive.
Alerts tab
Alerts
Live DOT alerts in your state.
Grouped by route, straight from the official feed.
Map tab navigate to milepost
Map
Navigate to any mile marker.
Tap a marker, hand off to your nav app.

Private by default

No account. We don’t track where you go.

No sign-up, no email, no phone number — just open it and drive. Your mile markers, trips, and location stay on your phone; we don’t collect or sell them, and there are no ads.

Read the full privacy policy →

FAQ

Questions, answered.

What does MileCheck do?

It shows your nearest highway mile marker in real time, anywhere in all 50 states — plus live road conditions and alerts pulled straight from state DOTs. You always know exactly where you are, and what’s ahead on your route.

New to mile markers? Mile markers vs. GPS — why both still matter →

Which states are covered?

Mile markers in all 50 states. Live DOT alerts in 42 states today, growing toward all 50.

Coming soon: AL, MI, PA, RI, SD, VA, WV, WY.

Does it work without cell service?

Yes — mile markers are stored on your phone, so they work in dead zones. Live alerts need a connection.

What’s free, and what’s premium?

Your current mile marker is always free. Premium — the live map, DOT alerts, and trip tools — is $9.99/yr or $1.99/mo, with a 7-day free trial.

Does it show border wait times?

Yes — live wait times at US land borders, split by passenger and commercial lanes (including commercial FAST), in both directions: into the US from CBP, and into Canada from CBSA. Check the line before you leave.

Does it work with CarPlay and Android Auto?

Yes, both — and the car screen is free. It’s deliberately simple right now: your highway, mile marker, and current road conditions, glance-and-go. It’s not the full app on the dashboard — just the one thing you need while driving, with no clutter. A richer car screen is on the way.

Can I share my exact location?

One tap sends your precise mile marker and coordinates to anyone — perfect for telling roadside assistance, a tow truck, or family exactly where you are on the highway.

Will it drain my battery?

MileCheck uses GPS while it’s open, like any map app. There’s no heavy background tracking and no ads pulling data in the background, so it stays light on your battery.

Built for the Northwest

Beat the bridge. Beat the pass.

If you drive Seattle, MileCheck shows the city’s drawbridges — Fremont, Ballard, Montlake, University, South Park and more — raised or lowered, live on the map, so you can see if the bridge is up before you’re stuck behind it. Headed over the mountains? You get Snoqualmie and Stevens pass conditions and chain controls, straight from WSDOT.

For platforms and partners

The highway intelligence layer — licensable, integrable, already in production.

Most milepost data products stop at the static layer: “where is MP 142?” MileCheck delivers both — that milepost lookup plus live conditions at MP 142 right now, normalized from 42 state DOT feeds across 19 distinct upstream platform formats. One schema. One API response. No state contracts on your side.

Open a conversation →

Now on the Geotab Marketplace · fleet add-in & data API coming soon.

MileCheck MileCheck App
★★★★★ App Store & Google Play
50 states · 42 live DOT integrations
CarPlay & Android Auto

The infrastructure

Four layers, one stack.

01

Milepost corpus

Every interstate, US highway, and most state routes across all 50 states — sourced from official state DOT and government GIS records, never crowd-sourced. Quality-checked, normalized across state-by-state inconsistencies, and interpolated to one-tenth-of-a-mile precision between markers. Bundled offline in the app; available as a structured dataset for integration.

02

DOT integration corpus

42 state DOTs integrated and growing, each a different upstream platform format. A serverless dispatcher normalizes every source into a single consistent road-conditions and incident schema, with caching tuned per source and resilient fallbacks for agencies with restrictive access.

03

Navigate-to-milepost primitive

The first consumer nav stack where a mile marker is a destination, not a display element. Tapping a milepost in the map hands off to Google Maps, Apple Maps, or Waze with the milepost coordinate as the routing target. Direct workflow value for dispatch-to-driver handoffs in fleet, roadside, and emergency-response use cases.

04

CarPlay & Android Auto

Live on CarPlay and Android Auto. Apple’s Driving Task entitlement requires a separate navigational utility review — it’s not a standard developer-portal option, and most transportation apps don’t qualify. MileCheck passed that review. The same data layer that powers the phone experience ships to the vehicle screen.

Who we talk to

Six segments where mile-marker precision is the missing layer.

Fleet management

Drivers report location by mile marker. Most telematics platforms log GPS coordinates — so dispatch can’t translate "I’m at MP 184 on I-80" into a routable position without a manual lookup.

Mapping and navigation

Adding a milepost layer means 50 state GIS negotiations, 19 schema formats, and a pipeline to keep it current. Most platforms skip it. The corpus is available to license today.

511 / traveler information

Cross-state corridor alerts live in 50 separate DOT systems with incompatible schemas. Aggregating them into one feed today means bilateral access agreements with every agency in your coverage area.

Digital freight and logistics

"Meet the driver at I-80 MP 184" has no native equivalent in consumer navigation. Drivers send approximate GPS pins. Dispatchers guess. Load handoffs at highway mile markers are a solved problem on paper, unsupported in software.

Roadside assistance and incident response

Drivers report being stranded by mile marker. Most dispatch systems require a street address to route a service vehicle. The closest workaround is asking the stranded driver to find a sign and read it back.

State DOT and transportation agencies

Monitoring corridor conditions across state lines means maintaining separate logins, schemas, and feeds for every neighboring agency. Interstate consortium data sharing is a perennial unsolved problem.

Build vs. license

Building the data is harder than building the app.

MileCheck is the complementary layer, not a competitor to your routing or weather stack: direct-from-state-DOT road events — closures, construction, crashes, chain controls — tied to the exact mile marker. It runs alongside the nav and weather tools fleets already use. And it’s privacy-light by design — no driver accounts, and the vehicle’s location stays in your platform, not on our servers.

50
state milepost corpus — sourced from official government GIS, quality-checked, never crowd-sourced
42
live agency integrations — production-proven, per-source cache tuning, resilient fallbacks
19
DOT platform formats — normalized into one consistent conditions and incident schema
24/7
monitored feeds — uptime tracked per state, alerting on stale or missing data at the source

Proven in production through the MileCheck iOS, Android, CarPlay, and Android Auto applications.

↗ Live API status  ·  DOT feed uptime monitored 24/7

Why it’s hard to build in-house
  • Every agency is different — 42 integrations, each with its own auth method, rate limits, schema, and reliability characteristics. One upstream change breaks your feed until someone catches it.
  • No common standard — ibi511, COtrip, ArcGIS FeatureServer, GeoJSON / WZDx, CARS FEU-g, EVBG XML, and more. No two states publish the same data the same way.
  • State-by-state access — some feeds require registration, API keys, terms agreements, and back-and-forth with agency IT. Multiply that by 50.
  • Continuous normalization — route names, mile marker formats, and direction codes vary by state and change without notice. Keeping them aligned is an ongoing maintenance burden, not a one-time project.
  • Feed monitoring — DOT feeds go stale, change endpoints, and return unexpected errors. Without active per-source monitoring, your app silently serves outdated data.

MileCheck solved this once, in production, for a consumer app with five-star ratings on both stores. The platform is available to license today — no agency negotiations required on your side.

Ways to work together

Pick the model that fits — we're flexible.

API access

The unified DOT alerts feed — direct from 42 state agencies: closures, construction, crashes, and chain controls — served through one normalized endpoint.

Data licensing

The 50-state milepost corpus as a static dataset or continuous sync, shaped to your schema.

White-label SDK

Mile-marker display and DOT alert integration embedded directly into your existing driver app.

Joint development

Co-engineering a vertical use case on top of the highway intelligence layer.

Open a conversation

Get in touch.

For partnership and platform inquiries, contact info@milecheckapp.com.

Now on the Geotab Marketplace

Already run a fleet platform? MileCheck drops in as an Add-In.

It installs inside MyGeotab and Geotab Drive as an Add-In — the driver’s live mile marker and direct-from-DOT alerts, right in the dashboard. Same normalized data layer, no rebuild on your side.