Bid Opening Date - April 10, 2026 9:30 AM CT

Are you able to provide an earthwork volumes report for this project?

From a bridge fabricator: 1) We have built many bridge over 200’ long over the years and when it comes to a 250’ bridge we will not be able to meet the 1.3 Hz lateral frequency I have my North Dakota PE put together the following RFI can you please ask a question about meeting the lateral frequency requirements if they would accept what in below and attached. If they don’t change something we will not be bidding this project. RFI on lateral frequency on a 250’x10’ bridge. It will be hard to meet the AASHTO lateral vibration requirement of 1.3Hz. I recommend one of the following two options. 1. Add Mass Dampeners to the structure to get the fundamental frequency to an acceptable level. This will add $100-$150k to the price. Much less to build the bridge wider. 2. Have customer specify SETRA for vibration design (short section attached). SETRA is referenced by AASHTO Guide Specification for the Design of Pedestrian Bridges. a. Bridge Class III or IV. IV does not require analysis. b. Comfort level Minimum Comfort. Unlikely Class III, Average Comfort is attainable. It should be noted that we have build other 250’x10’ structures that were Through Trusses (two bracing elements) that we were able to get the lateral to work as Class III, Average Comfort. These same bridges have noticeable lateral movement from wind to the point where you cannot comfortably ride a bicycle across on a windy day. 2) We will NOT be able to have a bridge on site by Oct. 10, 2026 for the interim completion date. If I had an order today we would be looking at 7-8 Weeks for stamped engineered drawings and calculation and due to the size of the bridge, we would not be able to get you delivery of the bridge until late November or December at the earliest, more realistic would be first quarter of 2027. Can the project completion date be extended?

Would you be open to expanding the specifications to include RTC equipment as part of the scope?

In Section 110 there are 2 locations (341+01 Lt & 5376+86 Lt) that are requiring "Vehicle Speed Feedback Signs". When looking at the note 754-P01 in Section 6 Sheet 3 it specifically states that these are going to get mounted on the sign supports shown in section 110. Station 341+01 Lt says mount on existing supports, but when you look at Section 110 Sheet 6 the station says mount on new supports. Station 5376+86 Lt says "Mount on VSFS" with no posts shown in Section 110 Sheet 5. Special Assembly D shows these 2 stations should be mounted on 3 EA telespar posts. What is required for these stations? If adding posts and anchors to telespar that will increase the LF and will need an addendum to address this.

There are special traffic control signs shown in Section 100 Sheet 12 but not quantities shown in Section 100 Sheet 1 & 2. Please confirm how many are needed and depending on that it will change the Traffic Control units required for the project.

Would Aluminum poles be acceptable to provide for Light Standard Type A and B in lieu of stainless steel ?

Unable to open any of the attachments. Do I need a special program to view the pdf's?

Does the NDDOT request bidders to incorporate Liquidated Damages into bid if lighting is not installed prior to 11/14/2026 completion due to lead times by suppliers for stainless poles? Being (1) large Lighting System, will it be considered "ALL" light poles functioning to meet completion date? 3-4 weeks to receive drawings 28 days for NDDOT to review 16-18 week lead time (Mid-October timeframe)