e20 tallinn - narva reconstruction maardu - valgejÕe
DESCRIPTION
E20 TALLINN - NARVA RECONSTRUCTION MAARDU - VALGEJÕE. MAIN OBJECTIVE. Reconstruction of various road sections to improve the road condition, traffic safety and road environment. MAIN PARAMETERS. pavement - 11,5 m (1 + 2 x 3,75 + 3) embankment - 10 - 12,25 m road - 35,5 - 37,5 m - PowerPoint PPT PresentationTRANSCRIPT
MAIN OBJECTIVE
Reconstruction of various road sections to improve the road condition, traffic safety and road environment
MAIN PARAMETERS• pavement - 11,5 m (1 + 2 x 3,75 + 3)
• embankment - 10 - 12,25 m
• road - 35,5 - 37,5 m
• central reserve ~ 11 m
TRAFFIC VOLUME
2003 2020
• Jägala km 26,4 7270 9880
• Kuusalu km 40,3 6040 8640
• Liiapeksi km 52,0 4550 6500
TRAFFIC SAFETY
• 2000 - 2003 - 42 traffic accidents
• 5 people killed
• 59 injured
• walking along the road - 13
• collision with animals - 7
• dark time - 54% of the accidents
PAVEMENT CONDITION LAST CONSTRUCTED
• Section 1 - 1982 - 1988
• Section 2 - 1962 - 1988
• Section 3 - 1989 - 1990
• Section 4 - 1979
• Section 5 - 1980
PAVEMENT CONDITION
IRI ruts defects bearing capacity
Section 1 4,76 13,4 1 - 5% 345
Section 2 5,99 14,4 2 - 8% 390
Section 3 4,13 13,5 1 - 8% 335
Section 4 5,85 10,5 2 - 5% 315
Section 5 6,51 13,5 3 - 7% 299
Critical value 3,5 - 8 % 230
SCOPE OF MAIN WORKS
• Construction of the new payment courses
• Improvement of embankments
• Improvement of the drainage system
• Construction of a new bridge
• Renovation of viaducts and bridges
• Traffic arrangement and safety measures
• Environmental mitigation measures
MAIN INDICATORS• Reconstruction of main road 62,7 km
• Earthworks 305 000 m3
• Pavement of main road 820 000 m2
• Pavement of road junctions 98 000 m2
• Renovation of viaducts 7 pcs
• Construction of a bridge 1 pcs
• Renovation of bridges 5 pcs
• Renovation of pedestrian tunnels 2 pcs
• Renovation of cattle creep 1 pcs
• Safety barriers 30 000 m
• Wildlife fence 5 500 m
• Road lighting 3 500 m
• Culverts and drainage pipes 4 600 m
PAVEMENT CONSTRUCTION
Main road
• Milling of existing pavement - 4-5 cm
• TAB 16 II - 4-5 cm
• KMA 12 - 4 cm (8,75) / TAB 12 I - 4 cm (2,75)
• Geogrid
Road junctions
• Milling of existing pavement - 4-5 cm
• PAB 16
• TAB 12 I - 4 cm
CONNECTION OF DRAINAGE WITH GULLY /
PIKIDRENAAZI ÜHENDAMINE RESTKAEVUGA
CROSS-SECTION OF CROSS-PIPEPÕIKTORU RISTLÕIGE
A-A
CROSS-SECTION TYPE II
Sections with rainwater pipe/ Sademeveetoruga lõigud
STA/ PK 245+44-248+05, 259+30-265+37, 270+15-273+60
Sections with partly punched pipe / Poolperforeeritud toruga lõigud
STA/ PK 248+05-259+30, 265+37-270+15, 273+60-275+70
CROSS-SECTION TYPE III
EARTHWORKS
• Widening of embankment (junctions, U-turns)
• Reconstruction of embankment - km 26,1 - 30,9
- excavation of unsuitable material
- excavation of peat - 11 000 m3
- demolition of concrete slabs
- filling of new material
- geotextile
DRAINAGE SYSTEM
• Cleaning of existing ditches
• Excavation of new ditches
• Cleaning and repairing of existing drainage system
• Construction of new drainage system
• Cleaning of existing culverts
• Construction of new culverts
RENOVATION OF VIADUCTS AND BRIDGES
• Construction of new waterproofing layer
• Replacement of expansion joints
• Repair of all deteriorated concrete on the bridge (footways) and other exposed surfaces
• Replacement of guardrails
• Repair of handrails
• Reinforcement of slopes
• New asphalt concrete layer on bridge deck
JÄGALA II
Length - 18 + 2 x 15 m; L = 53,6 m
Width - 15,6 m
Type - 3-span continuous steel concrete
composite bridge
TRAFFIC SAFETY
• Improvement of road junctions
• Elimination of entrances, U-turns, technologic turns
• Improvement of visibility
• Renovation of pedestrian tunnels - 2 pcs
• Sidewalks - 2,7 km
• Guard-rails - 30 km
• Road lightning - 3,5 km
• Road marking - rumble strips
ENVIRONMENTAL MITIGATION MEASURES
• Wildlife passages
• Wildlife fence
• Wildlife bank tracks
• Noise barriers
• Warning signs
• Hedge
• Top soiling and grass seeding
• Roadside clearing and crubbing