{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T02:32:52Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-PY-0HO1BRA06S",
    "type": "page",
    "country": "py",
    "name": "CONSTRUCTORA RIO PARANA S.A: public contracts won without a rival in Paraguay",
    "url": "https://assay-systems.com/register/py/uncontested/s/constructora-rio-parana-s-a/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 13,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 43,
        "unit": "percent",
        "display": "43%"
      },
      {
        "label": "without a competition",
        "value": 0,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 13,
        "unit": "count"
      }
    ],
    "text": [
      "CONSTRUCTORA RIO PARANA S.A won 13 of its 30 public contract awards in Paraguay without a rival from 2016-05-27 to 2025-12-19: 0 without a competition and 13 after a competition that drew a single bid. 5 buyers awarded it without a rival, the largest Municipalidad de Presidente Franco with 7."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2025-10-17",
          "Buyer": "Municipalidad de Presidente Franco ocds-03ad3f-475870-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-presidente-franco/",
          "How": "Single bid open",
          "Stated reason": "Menor cuantía nacional"
        },
        {
          "Date": "2025-10-09",
          "Buyer": "Municipalidad de Cambyretá ocds-03ad3f-471785-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-cambyreta/",
          "How": "Single bid open",
          "Stated reason": "Licitación Pública Nacional"
        },
        {
          "Date": "2023-11-01",
          "Buyer": "Municipalidad de Presidente Franco ocds-03ad3f-436216-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-presidente-franco/",
          "How": "Single bid open",
          "Stated reason": "Contratación Directa"
        },
        {
          "Date": "2022-11-14",
          "Buyer": "Municipalidad de Hernandarias ocds-03ad3f-418755-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-hernandarias/",
          "How": "Single bid open",
          "Stated reason": "Licitación Pública Nacional"
        },
        {
          "Date": "2022-11-01",
          "Buyer": "Municipalidad de Presidente Franco ocds-03ad3f-420741-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-presidente-franco/",
          "How": "Single bid open",
          "Stated reason": "Contratación Directa"
        },
        {
          "Date": "2022-08-18",
          "Buyer": "Municipalidad de Presidente Franco ocds-03ad3f-416799-1",
          "Buyer link": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-presidente-franco/",
          "How": "Single bid open",
          "Stated reason": "Contratación Directa"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Paraguay",
        "url": "https://assay-systems.com/register/py/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/py/constructora-rio-parana-s-a/"
      },
      {
        "name": "Municipalidad de Presidente Franco",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-presidente-franco/"
      },
      {
        "name": "Municipalidad de Ciudad del Este",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-ciudad-del-este/"
      },
      {
        "name": "Municipalidad de Hernandarias",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-hernandarias/"
      },
      {
        "name": "Municipalidad de Cambyretá",
        "url": "https://assay-systems.com/register/py/uncontested/b/municipalidad-de-cambyreta/"
      },
      {
        "name": "Gobierno Departamental de Alto Paraná (A.PARANÁ)",
        "url": "https://assay-systems.com/register/py/uncontested/b/gobierno-departamental-de-alto-parana-a-parana/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-PY-0HO1BRA06S",
    "cite_as": "Assay Systems, \"CONSTRUCTORA RIO PARANA S.A: public contracts won without a rival in Paraguay\", https://assay-systems.com/register/py/uncontested/s/constructora-rio-parana-s-a/"
  }
}