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OpenBridge Designer

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leap bridge steel -- Add Str III combination to default combinations

The user insists of adding Str III as a default combinations. It may be useful to create a default Str III combination (since now we have WL considered under design) instead of forcing the user to create a new combination that accepts WL. Please s...
8 days ago in Analytics / OpenBridge Designer 0 Future consideration

Add Strut and Tie Modeling methodology to OBD LEAP Concrete for Multi-Column Interior Bents

Since the 8th edition of AASHTO there has been more detail given on the use of Strut and Tie Modeling for the design of D-Regions in Concrete structures (AASHTO 8th & 9th Editions Section 5.8.2 and subsequent sections). In recent years there h...
9 days ago in Modeling / OpenBridge Designer 0 Future consideration

LBS add a special distribution factor for deflection (AASHTO Art. 2.5.2.6.2)

Under commentary C2.5.2.6.2: "For straight girder system bridge, this is equivalent to saying that the distribution factor for deflection is equal to the number of lanes divided by the number of beams"
21 days ago in Analytics / OpenBridge Designer 0 Future consideration

Include column and shaft controlling service loads (RCPIER/LEAP)

When designing drilled shafts, there is no option to display controlling shear and moment loads (bottom of column). This is needed for the geotechnical engineer on designing th drilled shaft. For column design, it is sometime useful to also show c...
22 days ago in OpenBridge Designer 0 Future consideration

Separate Limiting Tension Stress at the Top of Prestressed Concrete Girders Near Interior Supports

Add a separate limiting tension stress for the top of girders near interior supports. AASHTO LRFD permits the use of a limiting tension stress at the top of girders near interior supports for Service III different than the limiting tension stress ...
27 days ago in OpenBridge Designer 0 Needs review

Beam section library needs to be updated.

The Florida I-Beam (FIB) section library in LEAP Concrete has not been updated to reflect the latest standard revisions. In particular, the number of strand slots in the third row from the bottom (@ 7") is shown as 13 in LEAP, while the current st...
27 days ago in OpenBridge Designer 0 Future consideration

AASHTO LRFD 10th ed. request for implementation in LBS

When is Open Bridge/Leap going to be updated to the AASHTO LRFD 10th Edition? Our D.O.T. is requiring all design to be with the 10th edition.
about 2 months ago in OpenBridge Designer 0 Planned

WS wind speeds table for FDOT Sdg 2.4 (and combinations) are not updated as per 2025

There appears to be a discrepancy in wind load calculations—specifically, the gust factor of 0.85 remains different from AASHTO standards. However, the FDOT Structures Design Guidelines (SDG) 2025 now allow the use of AASHTO Article 3.8, which may...
about 2 months ago in OpenBridge Designer 0 Needs review

LBS to read LL libraries from LBC

The Live Load (LL) library in LBS currently allows importing .cs3 files, which are legacy formats from the stand-alone versions of CONSPAN and CONBOX (see screenshot below). However, in the latest releases of LBC under OpenBridge Designer (OBD), i...
about 2 months ago in OpenBridge Designer 0 Needs review

Exporting entire LBS model (cross-frames, diaphragms and stiffeners) to DGN

In LBS (LEAP Bridge Steel), it appears that cross frames (CF) and stiffeners are not exported to the DGN file. The screenshot below is from LBS Tutorial 2, which highlights this limitation. The goal is to streamline CAD detailing by having LBS gen...
about 2 months ago in Import/Export / OpenBridge Designer 0 Needs review