California Department of Transportation

Albion River Bridge Rehabilitation/Replacement

simulation of one alternative for the new bridge
Simulation of one of the proposed Albion River Bridge Replacement alternatives

This project is evaluating rehabilitating or replacing the Albion River Bridge on Route 1 in Mendocino County near the town of Albion.

This project is needed because the bridge is narrow, it does not meet current standards for shoulders and guardrails, and maintenance costs are high.

For more information, contact:

Project Manager
Frank Demling
Phone: (707) 445-6554, TTY 711

Public Information (Media Inquiries)
Cori Reed
Phone: (707) 441-4678, TTY 711

Project Update

Caltrans District 1 is planning to conduct a Supplemental Value Analysis Study and Life Cycle Cost Analysis on the Albion River Bridge and Salmon Creek Bridge projects after the completion of the geotechnical investigation planned for summer 2018. The Department and its transportation partners must consider numerous factors when developing alternatives to address improvement needs of California's transportation system. During the development of all projects, alternatives are considered to the extent necessary to minimize costs and adverse environmental impacts while maximizing employee safety and public benefits. Additionally, project decisions can also impact the life-cycle costs of a facility or corridor. These costs should also be considered when improvements are being developed and proposed. LCCA is an effective and useful tool used to determine the best value for spending limited resources. LCCA takes into account various current and future financial obligations and impacts of a particular design, including initial costs, future maintenance, rehabilitation and known upgrade costs, as well as user costs (motorists and the movement of goods). It includes an analysis of the investment needed to maintain an established level of service (LOS) in future years for the life of the facility. LCCA is an important consideration at every phase in the development of a project - from inception through final design and construction. Title 23, United States Code (U.S.C.), Subsection 106(f) entitled "Lifecycle Cost Analysis" defines LCCA as "a process for evaluating the total economic worth of a usable project segment by analyzing initial costs and discounted future costs, such as maintenance, reconstruction, rehabilitation, restoring, and resurfacing costs, over the life of the project segment." It also requires that LCCA be used as part of value engineering analyses for bridge projects.

Planned Geotechnical Investigation

The purpose of the geotechnical studies is to acquire the information necessary to determine the appropriate alignments and parameters for the design of the replacement alternatives. This information includes the engineering properties of the soil and/or rock in the potential project area, and the area extent, depth, and thickness of each identifiable soil or rock unit. The extent of the exploration and testing, and the number of measurements of each unit or stratum of soil and/or rock, must give a reasonable degree of confidence in the properties measured. The State will require a total of ten active work weeks, with an estimated two weeks for tree removal, two weeks for earthwork, four weeks for geotechnical studies, and two weeks to restore the ground contours to prior conditions. The work would be performed on weekdays, from 8:00 a.m. to 5:00 p.m.

Bridge History

The Albion River Bridge has been placed in the National Register of Historic Places and in the California Register of Historic Places. Placement on the National Register affords a property the honor of inclusion in the nation's official list of cultural resources.

The 969-foot long, 26-foot wide Albion River Bridge was constructed in 1944. To conserve materials (concrete and steel) during World War II, the proposed concrete arch structure design was abandoned and the bridge was redesigned using timber and a single-span riveted steel deck truss that was recycled from an old bridge once located on the South Fork of the Feather River. The concrete towers at each side of the river and the footings of the timber towers are reinforced with salvaged railroad rails.

Current Proposal

The California Department of Transportation (Caltrans) proposes to replace or rehabilitate the Albion River Bridge on State Route (SR) 1 in Mendocino County from postmile (PM) 43.3 to 44.2. Figure 1 shows the Albion River Bridge Replacement/Rehabilitation Project location and vicinity. The project is included in the 2016 State Highway Operation and Protection Program and is funded in the Bridge Replacement Program. Construction is currently scheduled for the 2020/2021 fiscal year.

Purpose and Need

The purpose of this project is to improve the function, the geometrics and the seismic and structural integrity of the Albion River Bridge and approach roadway to ensure uninterrupted traffic movement in the event of a collision or emergency incident, seismic event or other catastrophic failure, and to provide safe access for pedestrians and bicyclists across the bridge. These deficiencies also create high ongoing bridge maintenance costs.

Project Schedule

Target dates subject to change

Circulate Draft Environmental Document - September 2018

Final Environmental Document - March 2019

Final plans and specifications - January 2020

Ready to list - March 2020

Out to bid - October 2020

Award contract - December 2020

Begin construction - Spring 2021

Project completion - Fall 2024

Replacement Alternatives

Images are early concepts for visualization only.

Simulation for Albion Bridge Replacement
Example Arch

Simulation for Albion Bridge Replacement
Example Box Girder

Alternative 1a

4-span spandrel arch type or an 11-span spandrel arch type, built to the west.

Alternative 1b

4-span haunched cast in place (CIP) box girder or a 4-span haunched CIP segmental box girder, built to the west.

Alternative 2

3-span haunched CIP box girder or a 3-span haunched CIP segmental box girder, built to the east.

Alternative 3a

Staged 4-span CIP box girder, built slightly to the west.

Alternative 3b

Staged 4-span arch type, built slightly to the west.

Rehabilitation Alternatives

Alternative 4

This alternative would rehabilitate the bridge at existing width while upgrading the rails to meet current standards.

Alternative 5

This alternative retains the existing wooden structure with widening on both sides to provide 6' or 8' shoulders and upgraded rail. New timber truss sections would be constructed alongside the existing truss sections. It is assumed that footings for the new trusses would be founded on class 140 piles. There would be 32 footings, 1 bent, and 2 abutments on each side of the bridge.

Alternative 5.5

This alternative was submitted by Steve Heckeroth on behalf of the Albion Community Advisory Board proposing to "rehabilitate the existing bridge for use by northbound traffic and pedestrians and construct new box girder bridge west of existing bridge for use by southbound traffic and pedestrians."

Alternative 6

This alternative would rehabilitate the existing bridge and retain it as a pedestrian bridge. Because this alternative would not allow for passage by motorized vehicles, it would only be feasible in combination with Alternative 1a, 1b or 2.Pedestrian railing would be constructed in place of the tubular railing discussed in the other alternatives.

Notice of Preparation

Hazardous Waste

Caltrans and their consultants have conducted two investigations at the bridge site. The first, completed in June 2014, termed a "Bridge Survey," determined the concentration of wood preservative constituents in the structural members of the bridge for waste classification, the level of lead present in the bridge rail paint system, and if asbestos containing materials were present. This "survey" investigation provided a group of "constituents of concern" (COCs) used to direct the follow up investigation. The second investigation, termed a "Preliminary Site Investigation" (PSI), completed in December 2014, focused on determining if a release of any COCs had occurred in the immediate vicinity of the bridge. All investigations to date have occurred within the 100-foot wide State Highway Right of Way at the bridge site.

Right of Way and Land Net Information

Other Project Information and Documents