Abstract
East Java is one of the provinces in Indonesia which economic growth is above the national average. The city of Surabaya is the biggest contributor to the economy of East Java. Approximately 24% of the GDRP of East Java comes from this city. Although Bangkalan Regency is one of the bordering regencies of Surabaya, its economic growth is relatively low compared to the other bordering regencies. One of the government efforts to reducethe regional inequality is by building the Suramadu Bridge. According to the polar theory of growth, there are two possibilities that may occur as a result of regional interconnectivity. The first is centrifugal force which drives the population and its activities to move out of the core area followed by relocation of urban sectors and zones. The second is centripetal force which encourages population and activities to move towards the centeror core. The objective of this study is to assess the impact of the construction of the Suramadu National Bridge on economic growth in the core and periphery regions. Using Difference-in-Difference method, we found that the impact of the construction of the Suramadu Bridge on economic growth was greater in the periphery area than in the core area. This result might also imply that the development of Suramadu Bridge also resultedin the formation of centrifugal force which encouraged the economy to develop from the core to the periphery.
 JEL : R1, R4, O4, I1, I2
Highlights
Jawa Timur merupakan salah satu provinsi di Indonesia yang memiliki rata-rata pertumbuhan ekonomi di atas rata-rata nasional
Using Difference-in-Difference method, we found that the impact of the construction of the Suramadu Bridge on economic growth was greater in the periphery area than in the core area
Model for Evaluation of the Economic-Social-Environmental Outcomes of Investments in Road Transport Infrastructure
Summary
Teori ini dikembangkan oleh Solow (1956) dan Swan (1956). Teori ini menggunakan model fungsi produksi yang memungkinkan adanya substitusi antara kapital (K) dan tenaga kerja (L). Perubahan teknologi memiliki hubungan yang linier dengan tenaga kerja. Ruang ekonomi sebagai medan gaya terdiri dari pusat-pusat atau kutub- kutub tempat memancarnya gaya sentrifugal dan tertariknya gaya sentripetal (Perroux, 1950). Perusahaan sebagai pusat medan gaya akan menarik gaya sentripetal yang dapat berupa tenaga kerja atau sumber daya alam ke wilayah produksinya dan mengeluarkan gaya sentrifugal seperti perluasan lahan ke wilayah sekitarnya dan lain-lain. Kota Surabaya dapat diibaratkan sebagai suatu ruang ekonomi yang terdiri dari banyak perusahaan sebagai kutub atau pusat pertumbuhannya. Apabila biaya transportasi tinggi, perdagangan antar daerah yang relatif sedikit, sehingga upah pekerjanya tergantung pada jumlah persaingan lokal, dan dengan demikian jumlah pekerja lain di wilayah yang sama menurun. Gambar 2 menunjukkan kurva hubungan antara biaya transportasi dengan aglomerasi
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