How Much Does A Bridge Cost To Build?
- Joe Thomas
Bridge Type and Material Selections Affect the Final Cost of Bridge Construction – While each project is unique and final costs vary, count on spending between $175 and $350 per installed square foot of bridge. Depending on factors such as the material’s manufacturing method, its durability, and its general availability, materials account for a large portion of the cost.
- Regional pricing disparities occur for some resources, as well as expenses involved with shipping raw materials.
- For basic material combinations, such as steel and treated timber, the installed bridge cost is often on the lower end of the price range.
- Typically, more durable materials, such as fiber-reinforced polymer (FRP) and aluminum, are on the pricier end of the spectrum; nevertheless, they provide maintenance-free alternatives.
Here is a breakdown of every resource:
How much does the construction of a contemporary bridge cost?
Cost to Construct a Bridge Deck Every method of bridge construction has its own pros and disadvantages. Evaluation of viable options is always challenging in the absence of conditions that make one answer immediately better to the others. Comparisons based on the amounts of structural materials are unreliable indications of design efficacy and may potentially mislead.
In industrialized nations, the technological costs of processing raw materials (labor, investments for special equipment, shipping and on-site assembly of equipment, energy) and the indirect costs associated with project duration (staff, depreciation of investments, financial exposure) are typically dominant.
In other words, increased amounts of raw materials resulting from an effective and speedy building technique seldom render a solution uneconomical. As the chord area of steel trusses is far from the cross-sectional neutral axis, they are both lightweight and efficient in flexure.
- Built-up I-girders are heavier and less structurally efficient, but they permit robotized welding of the web to the flanges using profile-tracking equipment.
- In developed nations, the raw material cost reductions of a truss are quickly negated by the higher labor costs of hand welding, and built-up I-girders have long since replaced trusses in medium-span bridges despite their greater weight and worse structural efficiency.
Built-up I-girders were developed with thin web plates and web panel buckling was controlled by hand-welded longitudinal and vertical stiffeners two decades ago. Modern built-up I-girders employ thicker web plates to eliminate the need for welded stiffeners.
- Also in this instance, a non-stiffened I-girder is heavier than a stiffened I-girder, but it is cheaper due to the savings in hand welding.
- Tendon splicing by crossing and overlapping is frequently less expensive than the use of tendon couplers in prestressed-concrete bridges, even when the tendons are longer and the amount of strand (which generally measures the cost of post-tensioning) is greater.
Multiple-bent rebar is more structurally efficient than straight rebar, however straight rebar is favoured because to reduced labor costs. Variable cross-section bridge decks may reduce the amount of concrete, however they may incur prohibitive forming costs.
- Similar concerns apply for bridge building equipment.
- Due to the absence of design limitations in the construction process, ground falsework may result in optimal amounts of structural materials; however, these savings are quickly compensated by the high labor costs of poorly industrialized construction.
In developed nations, ground falsework is only utilized for minor bridges or for particular duties within more industrialized building processes. Prestressed-concrete bridges constructed through incremental launching are excellent indications of the problem’s complexity.
- Due to the existence of temporary launch stresses, the amount of concrete and prestressing required for a launched bridge is more than what is possible with ground falsework.
- However, casting lengthy deck portions on the ground is straightforward, repetitious, and needs minimal workers.
- The learning curve is low, the segments do not need to be handled, construction hazards are decreased, prestressing tendons are lengthy and require fewer anchorages and stressing operations, and specialized construction equipment is affordable and readily re-usable.
Even if the amounts of raw materials are greater, incremental launching is the preferred method for medium-span, medium-length bridges across the world. Several variables affect the cost-effectiveness of bridge design and project organization, the break-even point between alternative solutions varies by nation and, frequently, by area of the same country, and the option is difficult to standardize:
- Length, regularity, and order of the spans have a significant effect on bridge building. The span sequence may have an even bigger influence on the building technique and cost of erection equipment than the span length. A longer span between two sequences of normal spans disrupts span continuity and may even lead to the construction of distinct bridge types for the two approaches.
- The cost of specialized construction equipment is determined by the weight of the deck in relation to its breadth for a certain span length. Due to savings in erection equipment, the use of twin box girders, for example, may be less expensive than the use of a single, broad box girder.
- All forms of self-launching erection equipment are significantly impacted by the radius of plan curvature.
- The setting of the bridge, the accessibility of the land underneath the bridge, and the height of the piers all affect the erection process. When the entire bridge deck is accessible from the ground, ground crane erection is frequently the most cost-effective construction method.
- The appropriate amount of industrialization of the building process is determined by the cost and availability of skilled personnel, the project timetable, the bridge’s length, and logistics.
- The number of bridges and their geometrical characteristics affect the selection of specialized erection equipment.
The investment in specialized equipment results in immediate expenses and financial risk. However, the service life of these equipment is far longer than the term of a normal bridge construction project, and many solutions are available to reduce the investment’s influence on the project.
- Typical options include leasing the equipment for the duration of the project, selling the machine when it is no longer required, or altering the machine and reusing it in subsequent projects.
- Local fiscal regulations also play an essential influence by determining the number of years for the investment’s complete fiscal depreciation.
The bridge contractors estimate these costs during the bidding process, keep a close eye on the actual costs during construction, and utilize this information to refine future bids. This information is not in the public domain; in fact, it is strictly secret because it directly impacts the contractor’s capacity to generate revenue.
- Nevertheless, comparisons of alternatives based on quantities of raw materials, labor, capital, energy, indirect costs, and construction hazards are frequently a reasonable starting point for determining the cost-effectiveness of a building technique.
- Despite the importance of mechanical bridge building to modern bridge engineering, little has been written about it.
These are the logic, mission, and values underlying BridgeTech’s offerings. The eManuals provide bridge owners, designers, and construction professionals interested in automated bridge building with trans-disciplinary knowledge and guidance on current bridge design and construction technologies.
- Owners and designers of bridges will discover detailed information on how the bridge will be constructed and how it will interact with specialized equipment.
- Educators will discover a robust technological foundation for theoretical bridge engineering courses.
- Contractors will find information on procurement, operations, performance, and productivity of special equipment, as well as a guide to value-engineering, time-scheduling, risk analysis, bidding, and the formation of management and site personnel for the risks and opportunities associated with mechanized bridge construction.
- Find comprehensive information on design loads and load combinations, calibration of load and resistance factors, design for robustness and redundancy, numerical modelling and analysis, out-of-plane buckling and prevention of progressive collapse, human error, failure of materials and systems, repair and industry trends.
- Construction engineers, resident engineers, inspectors, and safety planners will discover details on operations, casting cycles, cycle times, loads, and equipment-structure interaction.
- Numerous case studies on failed equipment exist for forensic engineers.
A contemporary bridge’s construction cost is comprised of direct expenditures for personnel, structural materials, disposable materials, equipment depreciation, energy, and indirect costs connected to project length. The courses of modern bridge design and construction technology that BridgeTech teaches for the Continuing Education Program of the American Society of Civil Engineers and face-to-face in the offices of bridge owners, designers, and builders examine new and emerging bridge technology and modern construction techniques.
- Examines configurations, operations, kinematics, loads, performance, productivity, structure-equipment interactions, and industry trends for each family of bridge building machinery over the course of two days. The course examines beam launchers and shifters, self-launching gantries and lifting frames for precast segmental bridges, movable scaffolding systems (MSS), form travelers for balanced cantilever decks and arches, forming carriages, span launchers and portal carriers with underbridge for full-span precasting, and bridge launching equipment. The course also investigates the design of bridge piers, abutments, and superstructures for the safe and effective use of specialized equipment.
- This two-day seminar covers in depth the design, construction, technology, and industry trends of bridges that are introduced in stages. The course investigates the factors that make incremental launching a competitive approach and compares the various alternatives. It is well illustrated with around 300 images. It describes how to regulate self-weight bending and shear using launch noses, temporary piers, and front cable-stayed systems. It investigates geometric launchability criteria, the RTM method for parametric launch stress analysis using an Excel spreadsheet, the stability of steel girders, launch post-tensioning and casting yard organization for prestressed-concrete bridges, launch bearings and guides, and thrust and control systems for uphill and downhill launching.
- This one-day course examines the geometric design of precast segmental bridges, casting curve analysis, production of standardized atypical segments combined with geometry correction in the short-line molds, and geometry control of short- and long-line casting. The course examines configurations, operations, kinematics, loads, productivity, stiffness interactions to consider for bridge design, the stability of tall bridge piers, and the staged application of post-tensioning to avoid joint decompression and the risk of brittle span failure for each family of self-launching gantries and lifting frames. In addition, the course explores novel approaches for the simultaneous building of nearby bridges and the full potential of macro-segment construction.
- This one-day course examines the application of MSS for span-by-span and balanced cantilever casting. You will discover when span-by-span casting is a competitive alternative to incremental launching and precast segmental construction, compare the use of telescopic MSS for macro-segment balanced cantilever bridges with in-place casting with form travelers, and investigate bridge design and detailing for effective use of MSS. In addition, the course describes the configurations, operations, loading, kinematics, performance, productivity, structure-equipment interactions, and industry trends of overhead, OPS, and underslung MSS for span-by-span casting, telescoping MSS and form travelers for balanced cantilever casting, and forming carriages for segmental slab casting on steel girders.
- This one-day course examines the design, construction, technology, and industry trends of incrementally launched steel and prestressed-concrete bridges. It describes the use of launch noses, temporary piers, and front cable-stayed systems for self-weight bending and shear control, web stability and lateral torsion-flexure buckling of steel girders, and launch post-tensioning, deck segmentation, and casting yard organization of prestressed-concrete bridges. The course analyzes launch bearings and guides, thrust systems, and deck movement control for both types of bridges during uphill and downhill launching.
The eManuals enhance and integrate the courses to provide a complete treatment of the subject. Photo: courtesy of Povoas. BridgeTech provides books, eManuals, and a wealth of special articles and free publications on contemporary bridge design and construction technologies.
- Dr. Rosignoli’s one- and two-day seminars for the ASCE Continuing Education Program and on-demand in the offices of bridge owners, designers, and builders are authentic learning experiences designed to train bridge teams in industry-driving issues while achieving continuing education objectives.
- Enjoy the richness of information, learning, and insights that our research and development efforts may offer to your company, agency, and professional career.
} } } } } } The Bridge Club and the Bridge Industry provide an extensive assortment of unique articles and free books on contemporary bridge design and building technologies. The following articles are suggested reading on the subject. By : Bridge Deck Construction Cost
How much does a Creek Bridge cost to construct?
The ultimate cost per square foot to construct a stream bridge is between $30 and $300. There are a variety of bridge building alternatives available for crossing the brook. Wooden Bridge and Steel Bridge are the most prevalent. Following is a discussion of the many types of bridges and their respective building costs:
Numerous variables affect the price of a bridge, including the kind of terrain, site requirements, type of structure required, building material, weather conditions, worker rates, etc. Therefore, to construct a bridge, it is necessary to collect data and evaluate costs.