Key Takeaways
- A bridge MMS is element ID and crack crop — not a drone still of the whole crossing.
- DOT reviewer and contractor are different lists. Do not reuse a roofing “job done” template.
- Free is 1 device, 300 SMS lifetime, and 300 contacts. Developer is 25,000 SMS per year. Platform price is devices plus send volume.
- Crew-app OTP stays off the inspection radio.
- Idempotency is element-id plus ticket — weather recuts the same work order.
Summary
Scenario 1161 is field-service MMS for highway-bridge inspections — crack, bearing, expansion — not arborist crowns, not solar combiners, not cell-tower azimuth, not roof shingles. The ticket closes when the cropped element is readable. Service pricing is devices plus SMS send volume. You bring the phones and operator credit. Free is 1 device, 300 SMS lifetime, and 300 contacts.
Starter allows 2 devices: inspect dual-SIM plus a spare. Uncapped platform volume is not unlimited carrier SMS. Confirm MMS limits in Developer Center.
element · crack · ticket
element-id + ticket — weather recuts the WO
A span photo is not a drone dump
Close copy names element-id and location. Roofing “we’re off the shingles” is a different trade. Mixing them on one purpose is how DOT STOPs after a contractor blast.
MMS gateway, transactional SMS.
If the tech sends the approach selfie as “complete,” DOT still has no crack crop. Crop the element. Keep lane notes off the contractor thread.
Bridge MMS matrix
| Shot | Audience | Failure |
|---|---|---|
| Crack crop | DOT | Uncropped dump |
| Access | Contractor | Traffic notes leaked |
| Weather abort | Once | Hourly “still holding” |
| App OTP | Auth pool | OTP on the inspect radio |
Crack crop vs whole-deck dump
Persist element-id plus ticket. Signed callbacks. Webhooks, DLR. MCP wraps REST only.
Lane closures are not auto-reply
Auto-reply never grants a lane closure. FHWA Bridge and DOT closeout stay in the ticket, not a STOP keyword.
Devices, volume, and airtime
Storm weeks spike. We meter devices and platform sends. You pay the operator. Free (1/300/300) is one span proof.
Inspection operations
Charge the chassis before the callout. Setup, Downloads, pricing.
Decision guide
Ship when DOT and contractor lists are split. Delay if roofing templates close bridge tickets. Not a CodeCanyon inspect pack.
Span checklist
- Ticket-keyed idempotency.
- Cropped element to DOT.
- Lane notes off contractor SMS.
- OTP off inspect SIM.
- Developer Center fields confirmed.
Next steps
Scenario 1101 arborist, scenario 1041 solar.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- MMS gateway on your own SIMMultimedia where supported
- two-way SMS inboxReplies on your SIM
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances





