2001 – Illinois Route 29 Bridge over Sugar Creek | ABC Project and Research Databases

Year ABC Built: 2001
State: IL
County: Sangamon
Owner: State
Location: Rural
Spans: > Three-span
Beam material: Steel
Max Span Length (ft.): 37.4
Total Bridge Length (ft.): 253.1
Construction Equipment Category: Conventional
ABC Construction Equipment: None
State ID Number: 084-0039 (EB) & 084-0040 (WB)
NBI Number:
Coordinates
Latitude: 39.780439 | Longitude: -89.589744

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Under Construction

Bridge Description

Project Summary:

Project Location:

1 mile east of Springfield

Impact Category:

Tier 5 (within 3 months)

Mobility Impact Time:

Primary Drivers:

reduced onsite construction time
reduced traffic impacts

Dimensions:

Two adjacent bridges: (1) 253.1-ft long and 37.4-ft wide five-span eastbound bridge; (2) 251.0-ft long, 37.4-ft wide four-span westbound bridge

Average Daily Traffic (at time of construction):

8650

Traffic Management (if constructed conventionally):

If constructed conventionally: not available

Existing Bridge Description:

The two adjacent four-span continuous steel superstructures on stub abutments and solid stem piers on steel piles were built in 1961. Their reinforced concrete decks were deteriorated and required replacement.

Replacement or New Bridge:

Deck replacement

Construction Method:

The existing decks of the two adjacent bridges were removed and replaced with full-depth precast post-tensioned concrete deck panels. The 7.5-inch thick, full-width precast concrete deck panels had a concrete strength of 5000 psi and were typically 7.6 – 8.2 ft long. The eastbound bridge was re-decked with 29 panels, and the westbound bridge with 31 panels. The existing steel beams were reused and made composite with the panels. Shear keys were cast between the panels, and the panels were post-tensioned longitudinally with 1-in-diameter high-strength steel bars at 18-inch centers.

Stakeholder Feedback:
High Performance Material:

None

Project Planning

Decision Making Tools:
Site Procurement:
Project Delivery: Design-bid-build
Contracting:

Geotechnical Solutions

Foundations & Walls:
Rapid Embankment:

Structural Solutions

Prefabricated Bridge Elements: Full-depth precast deck panel w/PT
Prefabricated Bridge Systems:
Miscellaneous Prefabricated: CIP reinforced concrete closure joints, standard concrete overlay

Costs & Funding

Costs:

The low bid for bridge pay items was $1.08 million, and the total contract was $6.77 million including roadwork and two additional bridges built with conventional decks. Cost was $57 per sq ft of bridge deck area, compared to the average re-decking cost at that time of $35 per sq ft. The additional costs can be attributed to first use; the Illinois DOT believes those costs will go down with increased usage and contractors becoming more accustomed to this type of work.

Funding Source:

Other

Incentive Program: