MDOT SHA OOTS Sign Structures (Open Data)

The MDOT SHA OOTS Sign Structures dataset is an actively maintained database of sign structures in Maryland. The Maryland Department of Transportation, State Highway Administration, Office of Traffic Safety "OOTS" built and maintains the database with help from the MDOT SHA Office of Information Technology. Sign Structures in this open data database are only those set to an active* status. Structures information is further described by detailed attributes; the attributes definitions are listed below in the Data Dictionary section. Points of Contact Data Owner: Faramarz "Faz" Sadeghi-Bajgiran for OOTS [e-mail] Data Steward: Elliott Plack for OIT EISD: [e-mail] Technical Support: MDOT SHA OIT Enterprise Information Services - GIS Team: [e-mail] Data Dictionary Sign structure data are described by a number of attributes, including general ones, inspection details, and more. Str. ID: the Structure ID, a six-digit identifier. The first two digits represent the county. The last four digits are sequential. Status: the structure's status. Most structures are marked active. Structures with a "CFR" status are noted as "Call For Removal" and a slated to be removed or replaced in the noted time period. eDR Number: e-Design Number: Str. Type: the structure type, based on the design. Structures can either be cantilevered (CN), overhead (OH), or a combination (CM). Owned by: the owner. Most are owned by MDOT SHA but certain special ones are owned by another state agency, a federal agency, e.g., NPS, or the tri-state compact, the Woodrow Wilson Bridge Commission. Maintained by: the agency responsible for maintaining/inspecting the structure. Usually, the same as owner but some structures have unique maintenance agreements. Acceptance Year: the year the structure was accepted into the state inventory and a good estimate of the age. End-of-Service: a future year in which the structure should be removed based on criteria. Removal Year: the year the structure was removed, in the case of inactive structures. Inspection Parameters Structures are repeatedly inspected as they are critical assets for navigation and would adversely affect the public if they were to fall. The inspections are closely monitored by OOTS. Inspections are categorized by In-Depth, Routine, or NDT (Non-Destructive Testing). Each inspection regime has the same attributes: Frequency: frequency in which inspections are due. Status: status of the current inspection cycle. CRS: Component Rating Score. A comprehensive, weighted rating score the considers each component of the sign. RAS: Risk Assessment Score: A criticality score based on criteria like traffic volume, speed limit, age, type, and proximity to critical infrastructure. CRS Date: The most recent CRS date. Due Date: The due date of the next inspection of the type. MOT: Maintenance of Traffic (MOT) procedures recommended for the particular structure. Other Attributes DMS ID: if there is a Dynamic Message Sign on the structure, the ID will be listed. # of AB's / Pole: Number of Anchor Bolts per Pole. The number varies by structure type. A reference to the numbering regime is here. AB Dia.: Anchor Bolt diameter in US inches. Span: the span is the length of the structure, in US feet. Span is the distance between posts or from the post to tip for cantilever structures. Clearance: the clearance underneath the structure in US feet. Cross Section Type: the cross-section type of the pole, typically round but there are other less common types. Contractor: the contractor that installed the structure, if known. Contract No: the contract under which the structure was installed. Manufacturer: the manufacture of the structure. Shop Drawings Exist: whether or not the shop drawings exist within MDOT SHA. B-2-P Connection: Base-to-Plate connection type B-2-P Gusseted: Whether or not the Base-to-Plate is gusseted. TEDD Comments: comments made by the Traffic Engineering Design Division in OOTS. Contact OOTS with any questions. Creator/Editor: There are several automatic fields that track the username that create and last updated the asset, and at what time. Inactive Structures * Inactive structures, e.g., those that have been removed, are also captured in this database but that information is not available here. Contact OOTS if interested in inactive structures.MDOT SHA OOTS 标志结构数据集（MDOT SHA OOTS Sign Structures Dataset）是马里兰州境内持续维护的标志结构数据库。该数据库由马里兰州交通运输部（Maryland Department of Transportation, MDOT）州公路管理局（State Highway Administration, SHA）交通安全办公室（Office of Traffic Safety, OOTS）牵头搭建并维护，马里兰州交通运输部州公路管理局信息技术办公室（MDOT SHA Office of Information Technology）提供技术协助。 本开放数据数据库收录的标志结构仅为状态标记为**激活（active）**的条目。结构信息附带详细属性字段，属性定义详见下文「数据字典」章节。 ### 联系方式 数据负责人：Faramarz "Faz" Sadeghi-Bajgiran（对接OOTS），邮箱：[e-mail] 数据管理员：Elliott Plack（对接OIT企业信息服务部），邮箱：[e-mail] 技术支持：马里兰州交通运输部州公路管理局信息技术办公室企业信息服务部GIS团队，邮箱：[e-mail] ### 数据字典 标志结构数据包含多类属性，涵盖基础信息、检测详情等： 1. **结构编号（"Str. ID"）**：6位数字标识符，前两位代表所属县，后四位为序列编号。 2. **状态（"Status"）**：标志结构的运营状态。绝大多数结构标记为「激活」；状态为「CFR」的结构将被标记为「待拆除申请（Call For Removal）」，并计划在指定时段内拆除或更换。 3. **电子设计编号（"eDR Number"）与电子设计编号（"e-Design Number"）**： 4. **结构类型（"Str. Type"）**：基于设计的结构类型，可分为悬臂式（CN, cantilevered）、高架式（OH, overhead）或组合式（CM, combination）。 5. **所属单位（"Owned by"）**：结构所有权单位。绝大多数归马里兰州交通运输部州公路管理局所有，部分特殊结构归其他州级机构、联邦机构（如国家公园管理局National Park Service, NPS）或三州协议机构——伍德罗·威尔逊大桥委员会所有。 6. **维护单位（"Maintained by"）**：负责结构维护与检测的机构。通常与所有权单位一致，但部分结构存在专属维护协议。 7. **验收年份（"Acceptance Year"）**：该结构纳入州资产清单的年份，可作为结构年代的合理估算依据。 8. **服务终止年份（"End-of-Service"）**：基于评估标准，该结构计划拆除的未来年份。 9. **拆除年份（"Removal Year"）**：非激活状态结构的实际拆除年份。 ### 检测参数 标志结构作为保障通行的关键资产，若发生坍塌将对公众造成严重危害，因此需定期开展检测，相关检测工作由OOTS严格监管。检测类别分为深度检测（In-Depth）、常规检测（Routine）及无损检测（Non-Destructive Testing, NDT）三类。各类检测方案共享以下属性： - **检测周期（"Frequency"）**：该类检测的计划执行频次。 - **当前检测周期状态（"Status"）**：当前检测周期的进展状态。 - **组件评分（CRS, Component Rating Score）**：综合考量标志结构各组件的加权综合评分。 - **风险评估评分（RAS, Risk Assessment Score）**：基于车流量、限速、结构年代、类型及与关键基础设施的邻近程度等指标计算的临界性评分。 - **最新组件评分日期（"CRS Date"）**：最近一次组件评分的日期。 - **下次检测截止日期（"Due Date"）**：该类检测的下次执行截止日期。 - **交通维护规程（Maintenance of Traffic, MOT）**：针对该结构推荐的交通维护作业流程。 ### 其他属性 - **动态信息标志编号（Dynamic Message Sign, "DMS ID"）**：若结构上搭载动态信息标志，则标注其编号。 - **单杆锚固螺栓数量（"# of AB's / Pole"）**：每根立杆的锚固螺栓数量，因结构类型而异，编号规则详见对应参考链接。 - **锚固螺栓直径（"AB Dia."）**：锚固螺栓直径，单位为美国英寸（US inches）。 - **跨度（"Span"）**：结构的长度，单位为美国英尺（US feet）。对于立杆式结构，跨度为立杆间距；对于悬臂式结构，跨度为立杆至悬臂末端的距离。 - **净空高度（"Clearance"）**：结构下方的净空高度，单位为美国英尺（US feet）。 - **立杆截面类型（"Cross Section Type"）**：立杆的截面类型，通常为圆形，亦存在其他少见截面类型。 - **承包商（"Contractor"）**：该结构安装承包商的信息（如可查询）。 - **合同编号（"Contract No"）**：该结构安装所属的合同编号。 - **制造商（"Manufacturer"）**：结构的生产厂商。 - **是否存有车间图纸（"Shop Drawings Exist"）**：马里兰州交通运输部州公路管理局是否存有该结构的车间施工图纸。 - **底板连接类型（"B-2-P Connection"）**：底座-底板（Base-to-Plate）的连接类型。 - **是否带支撑连接板（"B-2-P Gusseted"）**：底座-底板连接是否带有支撑连接板。 - **交通工程设计部备注（"TEDD Comments"）**：OOTS下属交通工程设计分部（Traffic Engineering Design Division）提交的备注信息。 - **创建/编辑信息**：系统自动记录创建及最后编辑该资产的用户名与对应的时间戳。 ### 非激活结构 本数据库仅收录激活状态的标志结构，已拆除等非激活状态的结构数据未在此公开。若需获取非激活结构的相关信息，请联系OOTS咨询。