Bridge Engineering & GAD Automation

AI-Powered Bridge Design and GAD Generation

Automate General Arrangement Drawings for Railway and Highway Bridges

Aagento AI Bridge Design accelerates bridge engineering through AI-powered automation of General Arrangement Drawings (GADs) for railway and highway infrastructure. Synthesize multi-span elevations, pier and abutment cross-sections, hydraulic clearance envelopes, and foundation depths strictly compliant with Indian Railways (IRS) and IRC engineering codes.

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Approved Engineering Standards: ✓ IRS Concrete Bridge Code & Bridge Rules ✓ IRC:5, IRC:6 & IRC:112 Compliant ✓ Automated 100-Yr HFL Clearance ✓ Native AutoCAD .DWG / .DXF Export

Total Bridge Length

108.0 m (3 × 36m)

Superstructure

Single Cell PSC Box

Carriageway Width

Broad Gauge Double Track

Alignment Skew

12° 30' Right

▸ Generating parametric multi-span bridge configuration...

✔ Verified span-to-depth ratio (1/12) strictly compliant with IRS CBC

100-Year Discharge (Q)

2,850 m³/s

Lacey Regime Waterway

L = 256.0 m (W = 4.8√Q)

Mandatory Freeboard

1.500 m (IRS Major Bridge)

Max Scour Depth

17.0 m Below HFL (RL 91.40)

▸ Evaluating Lacey regime equation and afflux calculation...

✔ Afflux (0.18m) within allowable limit; Soffit clears 100-Yr HFL + 1.50m

Foundation Type

Circular RCC Well (7.0m OD)

Founding Level

RL 78.900m (Hard Strata)

Bearing Capacity

SBC = 45.0 t/m²

Seismic Zone

Zone IV (Ah = 0.12)

▸ Calculating foundation grip length below maximum scour level...

✔ Minimum 1/3 HFL grip length satisfied per IRS Substructure Code

Export Deliverable

AutoCAD (.DWG / .DXF)

Sheet Layouts

A0 / A1 Standard Borders

Layer Architecture

AIA CAD Standard Layers

Drafting Turnaround

4.5 Minutes (Zero Errors)

▸ Assembling full drawing set with automated dimension strings and title blocks...

✔ Drawing package exported with 100% CAD layer standards compliance

90%

Faster GAD Drafting

Accelerate drawing generation from weeks to minutes

100%

IRS & IRC Aligned

Strict compliance with railway and highway bridge design codes

Zero

Geometric Drafting Errors

Automated dimensional cross-checks and clearance envelopes

Multi-CAD

Export Deliverables

Full support for AutoCAD .DWG, DXF, and vector PDF

Engineering Foundation

4 Pillars of AI Bridge Design & GAD Automation

Engineered specifically for infrastructure consultants and railway authorities. Aagento integrates multi-span superstructure sizing, hydraulic HFL clearances, substructure engineering, and production-ready CAD generation into a unified workflow.

Pillar 01

Parametric Multi-Span & Superstructure Synthesis

Automate the selection and parametric generation of bridge superstructures across PSC I-girders, PSC Box girders, Composite steel plate girders, and open-web through trusses.

Span-to-Depth Ratio Optimization: Automatically verifies structural girder depths conforming to IRS Concrete Bridge Code and IRC:112 span-to-depth rules (1/12 for continuous PSC, 1/16 for simply supported girders).

Skew Angle Compensation: Solves complex bridge alignments with skew angles up to 45°, automatically staggering pier locations, detailing end diaphragms, and spacing expansion joints.

Multi-Track & Multi-Lane Cross-Sections: Supports single/double railway tracks with 350mm ballast cushion, as well as 2-lane, 4-lane, and 6-lane highway bridge decks with median crash barriers.

PSC Box / I-Girder Span-to-Depth Sizing Skew Angle Solvers IRS CBC & IRC:112

Pillar 02

Bridge Hydrology & 100-Year HFL Freeboard Verification

Validate bridge waterway openings, afflux levels, and statutory vertical freeboard heights against 100-year peak flood discharges in strict compliance with IRS Bridge Rules.

Lacey Regime Waterway Calculation: Computes the required linear waterway (W = 4.8 √Q) and validates whether the effective clear span provided prevents dangerous constriction scour and backwater afflux.

Statutory 1.50m Freeboard Clearance: Enforces mandatory 1.50m clearance above design High Flood Level (HFL) for major railway bridges (1.0m for minor bridges) up to the lowest point of the superstructure soffit.

Maximum Scour Depth Calculation: Calculates deep regime scour depth (D_scour) around piers and abutments using Lacey silt factor equations under peak discharge conditions.

100-Yr Design HFL 1.50m Statutory Freeboard Lacey Scour Depth IRS Bridge Rules

Pillar 03

Substructure & Deep Foundation Modeling

Generate fully coordinated substructure and foundation layouts including pier caps, circular/dumbbell shafts, deep caisson wells, and bored pile foundations.

Pier Cap & Bearing Pedestal Detailing: Automatically sizes pier cap overhangs, bearing pedestals, and seismic restraining blocks conforming to RDSO standard drawings and IRC:78.

Grip Length & Founding Level Solvers: Establishes minimum foundation embedment depth below maximum scour level (at least 1/3 of maximum scour depth for well foundations) down to competent strata.

Abutment & Return Wall Detailing: Generates spill-through or solid gravity abutments complete with dirt walls, inspection galleries, weeping holes, and approach transition slabs.

Pier & Abutment Geometry Well & Pile Foundations Bearing Pedestals Seismic Restraints

Pillar 04

Production-Ready Multi-Sheet CAD Deliverables

Generate submission-ready, layered AutoCAD .DWG and .DXF drawing sheets complete with standard title blocks, hydraulic data tables, and dimensional notes.

Complete Drawing Sheet Assembly: Automatically prepares Sheet 1 (Elevation & Plan), Sheet 2 (Cross-Sections & Pier Details), Sheet 3 (Hydraulic Data & Soil Profile), and Sheet 4 (Bearings & Expansion Joints).

Statutory Authority Formats: Configured for Indian Railways Zonal Railway / RDSO title blocks, NHAI standard drawing templates, and state PWD engineering formats.

Layer & Pen-Weight Standards: Adheres strictly to international AIA CAD layer conventions (C-STR-CONC, C-STR-REIN, C-STR-DIMS) ensuring seamless multi-consultant review without drafting rework.

Layered .DWG / .DXF Hydraulic Data Sheet Standard Title Blocks Approved GAD Submission

Design Standards & Interoperability

Design Standards & Appraisal Compliance

Calibrated strictly to Indian Railways (IRS), RDSO standard span drawings, and Indian Roads Congress (IRC) codes.

Bridge Engineering Dimension	Statutory Code & Reference	Technical Specification & Design Benchmark
Prestressed Concrete Superstructure	IRS Concrete Bridge Code (IRS CBC)	Verification of permissible tensile and compressive stresses during transfer and service, minimum cover, and prestressing duct spacing.
Hydraulic Clearances & Freeboard	IRS Bridge Rules (Clause 16.7)	Mandatory vertical freeboard of 1.50 meters above 100-year High Flood Level (HFL) for major bridges and 1.0 meter for minor bridges.
Highway Bridge Design Criteria	IRC:112 & IRC:6 (Loads & Stresses)	Design for Class 70R, Class SV, and Class A vehicular loadings with dynamic load allowance and temperature gradient considerations.
Substructure & Well Foundation	IRS Substructure & Foundation Code	Grip length evaluation below maximum scour level (at least 1/3 of scour depth) and safe bearing capacity checks on rock socketing.
Schedule of Dimensions (SOD)	IRS Schedule of Dimensions (SOD 2022)	Standard horizontal clearance (2.36m from track centerline) and minimum vertical clearance (5.87m for 25kV AC electrification under ROBs).

Target Applications

Who Can Benefit from Aagento AI Bridge Design?

Built for engineering organizations, consultants, and public sector infrastructure authorities looking for speed, rigor, and design consistency.

Railway Engineering Consultants

Accelerate rail bridge GAD preparation strictly compliant with IRS codes, clearance envelopes, and RDSO guidelines.

Highway & Bridge Consultants

Deliver IRC-compliant General Arrangement Drawings for Flyovers, ROBs, Major Bridges, and River Crossings.

Infrastructure Engineering Firms

Scale technical output without inflating drafting team overhead, preserving tight delivery milestones.

EPC Contractors

Rapidly evaluate design options during bidding, verify subcontractor proposals, and shorten execution cycles.

Government Infra Agencies

Standardize drawing review and review submissions with automated clearance and geometry validation checks.

Bridge Engineering & Design Teams

Eliminate repetitive drafting bottlenecks and deliver consistent, error-free packages for structural approval.

Connected Ecosystem

Explore Related AI Infrastructure Solutions

Connect Bridge GAD generation seamlessly with digital modeling, DPR documentation, and cost estimation.

Product FAQs

AI Bridge Design (GAD): common questions

What does AI Bridge Design help prepare?

The module supports General Arrangement Drawing (GAD) preparation for railway and highway bridges, bringing bridge geometry and engineering inputs into a coordinated drawing workflow.

What should our team prepare for a bridge design demo?

Bring a representative bridge brief, available survey information, alignment details and drawing requirements. The engineering team can use these to discuss the inputs and outputs relevant to your project.

Do generated bridge drawings still need engineering review?

Yes. Your engineering team should check geometry, source data, project requirements and applicable design criteria before using drawings for submission or construction.

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