Bridge Copilot ™: Bridge ATC Platform for Design-Build Pursuits
Bridge Copilot ™ is a design-build pursuit and preconstruction decision platform for bridge ATCs. It locks the owner's baseline, generates and combines alternatives, compares expected cost and P90 risk deltas, tracks constraints and validation, and packages defensible backup before proposal submission. Its deterministic preliminary-engineering engine supplies the supporting geometry, quantities, checks, estimates, and 3D models.
Who Uses Bridge Copilot ™
- Design-build preconstruction teams evaluating bridge ATCs under live pursuit deadlines
- Bridge engineers and estimators developing and validating proposal concepts and cost deltas
- Pursuit leaders and reviewers who need a shared, traceable basis for selection and signoff
Core Features
- Automated TS&L concept generation — three bridge alternatives (precast concrete and steel plate girder options) from span length, lane count, and location inputs
- AASHTO LRFD-aligned girder optimization — selects optimal WF section (WF36TDG–WF95TDG) and girder spacing for each span
- Itemized cost estimation — superstructure, substructure, deck, barriers, and mobilization with regional unit cost adjustments by state
- Monte Carlo risk analysis — 10,000 simulations producing P10, P50, and P90 cost ranges for capital programming
- USGS seismic hazard integration — retrieves site PGA, Ss, and S1 automatically from project coordinates
- AASHTO LRFD design critique — scored compliance findings for each generated alternative
- Real-time 3D visualization — interactive bridge model updating live as parameters change
- Export to PDF, Excel, DXF, and IFC — formatted type study package ready for agency submittal
How It Works
Enter your bridge location, total crossing length in feet, and number of traffic lanes. Bridge Copilot ™ retrieves seismic hazard data, applies AASHTO LRFD span-to-depth heuristics, selects girder sections from the standard WF library, calculates construction costs by component, and runs Monte Carlo simulation — all automatically. Compare three alternatives side-by-side, then export a complete TS&L package.
Bridge Copilot ™ is not a final design tool. It operates at the preliminary alternatives phase that precedes detailed design in AASHTOWare, CSiBridge, or LARSA. It produces Class D cost estimates (±20–30%) suitable for alternatives screening and capital budget programming.
Supported Bridge Types
- Precast prestressed concrete wide-flange girder bridges (40–175 ft spans, WF36TDG–WF95TDG)
- Steel plate girder bridges (80–250 ft spans)
- Multi-span continuous configurations (up to 5 spans)
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