updated estimate that uses inputs consisting of the remaining transaction price, the remaining contract term, and the remaining costs to be incurred on the project.
If a contract is deemed to be in a loss position, the projected loss is recognized in full, including any previously recognized margin, in the period in which the change in estimate is made. Losses are recognized as an accrued loss provision on the consolidated balance sheets in the accrued liabilities caption. For contract revenue after the date that the loss is accrued, the accrued loss provision is adjusted so that the gross profit for the contract remains zero in future periods, subject to future adjustments to the overall expected profit or loss as determined at such time.
As of March 31, 2023, and March 31, 2022, we have $90.8 million and $203.5 million, respectively, of unapproved contract modifications included within our various projects’ transaction prices. These modifications are in negotiation with our customers or other third parties.
We estimate the likelihood of collection during the bidding process for new contracts. Customers with history of late or non-payment are avoided in the bidding process. We consider the necessity for write-down of receivable balances in conjunction with GAAP when evaluating our estimates of transaction price and estimated costs to complete our projects.
We bill our customers in conjunction with our contract terms. Our contracts have three main categories, (i) contracts that are billed based on a specific timeline, (ii) contracts that are billed upon the completion of certain phases of work, or milestones, and (iii) contracts that are billed as services are provided. Some of our contracts are billed following the recognition of certain revenue. This creates an asset on our consolidated balance sheets captioned “contract assets.” Other contracts schedules allow us to bill customers prior to recognizing revenue. These contracts create a liability on our consolidated balance sheets captioned “contract liabilities.”
We segregate our business into two reportable segments: Transportation and Civil. Our Chief Operating Decision Maker (“CODM”) uses these segments in order to operate the business. Our segments offer different specialty infrastructure services. Our CODM regularly reviews our operating and financial performance based on these segments. Each of our reportable segments is composed of similar business units that specialize in specialty infrastructure projects that are unique.
Our business is managed using revenue and gross profit primarily. Our CODM regularly uses this information to review operating results, plan future bids, allocate resources, target customers, and plan future growth and capital allocations. To determine reportable segment gross profit, certain allocations, including allocations of shared and indirect costs, such as facility costs, equipment costs, and indirect operating expenses, were made.
Our Civil segment is comprised of Oscar Renda Contracting, Inc., Mole Constructors, Inc., Southland Contracting, Inc., Southland Holdings, LLC, Renda Pacific, LLC, Southland Renda JV, Southland RE Properties, Oscar Renda Contracting Canada, Southland Mole of Canada, Southland Technicore Mole joint venture, and Southland Astaldi joint venture. This segment focuses on projects that include the design and construction of water pipeline, pump stations, lift stations, water and wastewater treatment plants, concrete and structural steel, outfall, and tunneling.
Our Transportation segment is comprised of American Bridge, Heritage Materials, LLC, and Johnson Bros. Corporation. This segment operates throughout North America and specializes in services that include the design and construction of bridges, roadways, marine, dredging, ship terminals, and piers, and specialty structures and facilities.
Total assets by segment is not presented as our CODM, as defined by ASC 280, does not review or allocate resources based on segment assets. We do not have material intersegment revenue or gross profit. Joint ventures are classified into the segment with which the projects align.