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The development of transportation in the city of Semarang, especially in the Banyumanik area, has an impact on increasing the movement of people, stuff and services. this greatly encourages an increase in transportation facilities and infrastructure in the Banyumanik area. An increase in the number of vehicles that is not matched by the development of infrastructure will cause conflicts on the road, especially at intersections or roundabouts. So far, on roads in the Banyumanik area, at certain hours there is often an ineffective traffic rush with road performance being an important infrastructure in transportation. This study used calculations based on MKJI 1997. The data collection was carried out by survey directly at the intersection location in this study determined 5 days and 3 observation sessions every day. It was found that the tirto agung intersection had 322 types of intersection and the highest traffic was on Wednesday 21 June 2023 with a traffic flow value of 3528 pcu/hour, capacity 2722 pcu/hour, degree of saturation 1.296, intersection delay 92.938 sec/pcu, queue probability 69.225% - 143.302%. Based on the research results, the performance value of the Tirto Agung intersection does not meet the 1997 MKJI requirements where the degree of saturation allowed for the unsignalized intersection type is <0.75, it is necessary to have a physical intersection engineering (APILL) or non-physical (Traffic Engineering) at the intersection location.

The Bekasi River is part of the Ciliwung-Cisadane River Region. The Bekasi River is an order 1 river from the Bekasi watershed which consists of 3 rivers, namely the Cileungsi River, Cikeas River and Bekasi River. The Bekasi River passes through Bekasi Regency. To determine the performance of a river, it is necessary to evaluate the physical condition and function of a river system, in accordance with the mandate from the Circular Letter of the Director General of Water Resources, Ministry of Public Works and Public Housing No. 05/SE/D/2016 dated 9 June 2016 concerning Guidelines for the Operation and Maintenance of River Infrastructure and River Maintenance. Assessment of the components of the Bekasi River facility based on Circular Letter Number 05/SE/D/2016 includes riverbeds, river banks, river banks, and river riparian areas. Assessment of the Bekasi River infrastructure components based on Circular Letter Number 05/SE/D/2016 includes river embankments, revetments, groves, flood spillways, flow control gates, flood pumps, rubber weirs, retention ponds, groundssill, inspection roads, H3 monitoring post buildings, Operation and Maintenance support buildings (laboratory, workshop, etc.), equipment infrastructure (heavy equipment, Operation and Maintenance vehicles), and information and communication equipment. The performance value of the Bekasi River condition is 77.85% and the performance value of the Bekasi River infrastructure is 79.30% so that the performance value of the Bekasi River is 78.58% which requires a type of Preventive maintenance.