Fuzhou World Bank Financed Projects Nanjiang Binlu, Phase-ii project of the Third Ring Road and Kuiqi Bridge environmental impact report



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Road strike and interchanges

2.1.1Nanjiang Binlu strike and interchanges

The Nanjiang Binlu project starts from Cangqianxilu, runs along the north bank line of Nantaidao Island to level-cross Jiefang Bridge, and crosses b Minjiang Bridge and Aofengzhou Bridge, and ends at Qianhengnanlu. The total length is 5.23km and the proposed width is 40m.


Along the whole Nanjiang Binlu, the Cangqian Trestle of 160m wide will be built wit the method of prestressed beam bridge and two 20m medium bridges with the method of prestressed simple-supported beam bridge.

2.1.2The Phase-II Project of the Third Ring Road strike and interchanges

The Phase-II Project of the Third Ring Road starts from the north end of the proposed Wanbian Bridge and ends at Nanjiangbin Xiuxianlu, i.e. the south end of the proposed Minjiang Kuiqi Bridge. The total length of the road is 12.474km and the road width is 79m and 50m respectively.


The road starts from the north end of the proposed Wanbian Bridge, runs through Shangqi Village, Sanbianzhou, Difengjiang River, Menqianzhou New Village, Pukou Village, Qianyuan Village, Aoshan Village, north side of Fujian College of Information and Technology, Duyuan Village, and joins Fuxialu between Sanfeng Shoes Company and Futeng Industrial Zone. The width of the road section is 79m. After crossing the intersection of Fuxialu, the Third Ring Road runs from west to east, and along the east end of the proposed the Third Ring Road-Fuxialu interchange to Chengmengshan, Fuqian Expressway, and to south end of the proposed Kuiqi Bridge, and than to the intersection with Fuqian Expressway. A three-layered interchange will be built there. The width of the road section is 50m.
Along the whole line of the Phase-II Project of the Third Ring Road, 2 interchanges and 2 grade separations will be built, among which will be a cloverleaf type interchange at the starting point and the north end of Wanbian Bridge, at Nantaidao Island Dilu and that at Fuxialu intersection will be grade separations. There will be a large bridge with a length of 420m and 8 medium and small bridges with a total length of 316m along the road.

2.1.3Kuiqi Bridge strike and interchange

The south end of Kuiqi Bridge is situated at south side of Linpu Village and Shaoqi Village, connects with the Phase-II Project of the Third Ring Road (corresponding to the Phase-II Project of the Third Ring Road Pile No. K11+610), and runs north along the proposed the Third Ring Road and crosses the Minjiang River. The north end of Kuiqi Bridge on the north bank of the Minjiang River connects the Beijiang Binlu interchange, which is the end of the bridge.


The total length of the main bridge and approaches will be 1.11km, among which the main bridge is 360m and the approaches on two sides are 750m. On the north bank will be a combined interchange for Beijiang Binlu and airport highway. The length of the bridge for pedestrians and bicycles will be 200m. The deck width of Kuiqi Bridge in this project will be 36.0m. The bridge area will be 41200 square meters. The combined interchange and ramp on the north bank will be 8.5m wide, with an area of 22901 square meters. The bridge for pedestrians and bicycles will be 5m wide, with an area of 1000 square meters.

Design standard

Major technical standard



No.

Item

Nanjiang Binlu

The Phase-II Project of the Third Ring Road

Kuiqi Bridge

1

Total line length(m)

52300

12474

1110(wherein main bridge 360 long)

2

Road category

City Grade I sub-trunk Rd.

City expressway

City expressway

3

Designed traffic capacity

780-875pcu/h

1500times/day




4

Designed traveling speed Km/h

40-50

80

80

5

Lane width(m)

3.75、3.5

3.75、3.5




6

Number of lanes

Bidirectional 4 lanes

Bidirectional 6 lanes

Short-term Design based on 6 lanes. 8 lanes reserved for long-term plan.

7

Interchange net height(m)

5.0




5.0 for motorized vehicle lane, 2.5 for nonmotorized vehicle lane and pedestrian way

8

Bridge deck width(m)




69.5

36.0

9

Median dividing strip width(m)




Min. width 2.00




10

Marginal strip width(m)




0.5




11

Standard axle load in pavement design KN

100

100




12

Max. longitudinal slope %

2.5(for nonmotorized vehicle)

recommendation 4;limit 6




13

Max. superelevation slope %




6




14

Min. radius of circular curve without super elevation (m)

300、400


1000




15

Min. radius of circular curve without transition curve (m)

500、700

2000




16

Min. radius of circular curve with super elevation (m)




250




17

Min. length of transition curve(m)




70




18

Min. length of horizontal curve(m)




140




19

Min. length of circular curve(m)




70




20

Min. radius of convex vertical curve(m)

General 600,limit 1350

General 4500,limit 3000




21

Min. radius of concave vertical curve(m)

General 700,limit 1050







22

Min. length of vertical curve(m)




70




23

Min. length of longitudinal slope(m)

110

290




24

Min. linear length between adjacent curves in same direction(m)




480




25

Min. linear length between adjacent reverse curves(m)




160




26

Min. net distance between interchanges (m)




1000




27

Min. length of horizontal curve with small turning (ɑ≤7°)(m)




1000/ɑ




28

Designed carload for

bridge and culvert



City Grade B

City Grade A

City Grade A

29

Anti-seismic standard

seismic peak acceleration 0.1g

Basic intensity 7, seismic peak acceleration 0.1g

Based on《Evaluation Report on Seismic Safety in Project Site》

30

Designed flood frequency

Every one hundred years

Every one hundred years

Every three hundred years

31

Navigation standard







Navigation channel grade II (for seacrafts less than 1000 tons);

Designed return period of flood of the highest navigable stage: 20 years;

Net width of single hole bidirectional navigation: 15 to 17m.


32

Calculated traveling speed in ramp (km/h)





Intersected with speedway: 50-40;

Intersected with arterial road for communication: 45-35;

Intersected with arterial road:40-30





33

Width of ramp for unidirectional travel(m)




≥7




34

Width of ramp bridge(m)







8.5

35

Transition length of parallel speed change lane (m)




60




36

Transition section of direct speed change lane




Control based on external rim slope, pull out: 1/15 to 1/120,pull in: 1/30




37

Min. distance of ramp intersection(m)




Along traveling direction, going out and coming in: 55;

Others:110






38

Min. length of ramp circular curve(m)




Min. length 85 to 65

for ramp speed of 50 to 40; 65 for speed of 40 to 30.






39

length of deceleration lane(m)




Ramp length 70 to 85 for ramp speed of 50 to 40; 85 to 95 for speed of 40 to 30.




40

length of acceleration lane(m)




Ramp length 180 to 210 for ramp speed of 50 to 40; 210 to 230 for speed of 40 to 30.








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