A00844-611940.pdf

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Attached to
611940 SOMERVILLE FAP No. HIP(NGB)-003S(987)X Bridge Replacement, S-17-016 (3GF), Webster Avenue o
Solicitation number
BD-27-1030-0H100-0H002-133205
Issued by
Middlesex County, Massachusetts

About this file

This is a U.S. Fish and Wildlife Service (USFWS) Endangered Species Act consultation concurrence verification letter for the Massachusetts Department of Transportation (MassDOT) bridge replacement project at Webster Avenue over the MBTA and BMRR in Somerville (Proposal No. 611940-136645). The project involves replacement of Bridge No. S-17-016 (3GF), reconstruction of roadway approaches between Prospect Street and Everett Street, and realignment of Newton Street to eliminate a skewed intersection by creating two "tee" intersections with work segments under 500 feet in length. The USFWS determined on December 13, 2024, that the project is not likely to adversely affect (NLAA) federally listed Indiana bat, northern long-eared bat, and proposed endangered tricolored bat species. This determination allows the project to proceed under the concurrence provided in the Programmatic Biological Opinion for Transportation Projects, with a 14-calendar-day verification period during which the USFWS may request additional information if local knowledge indicates the project does not meet NLAA criteria. The lead federal agency is the Federal Highway Administration (FHWA).

The project qualifies for concurrence under the programmatic consultation based on the submitted bridge bat assessment dated October 10, 2025, which indicated the absence of Indiana bats, northern long-eared bats, or tricolored bats roosting in or under the bridge. MassDOT is enrolled in the Monarch Butterfly Nationwide Conservation Commitment Agreement (CCAA), resulting in a determination that the action is not likely to jeopardize the continued existence of the monarch butterfly (proposed threatened species). Key avoidance and minimization measures require that all operators, employees, and contractors be made aware of environmental commitments and applicable measures. If bats are discovered prior to or during construction despite the initial assessment showing no use, MassDOT must notify the local USFWS Field Office within two working days and document any incidental take, submitting documentation within five working days of construction completion. The determination remains valid only if the project is implemented as described in the submitted documentation; any project modifications or new information regarding bat impacts may require additional ESA Section 7 consultation.

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A00813-611940.pdf PDF
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611940 - Plan Holders List 9-22-2026.pdf PDF
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A00820-611940.pdf PDF
SOMERVILLE-611940-136645-A-1.pdf PDF
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Massachusetts Department Of Transportation Highway Division Proposal No. 611940-136645

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DOCUMENT A00844

U.S. FISH AND WILDLIFE SERVICE

NLAA CONCURRENCE VERIFICATION LETTER

Massachusetts Department Of Transportation Highway Division

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THIS PAGE INTENTIONALLY LEFT BLANK

03/04/2026 14:11:59 UTC

United States Department of the Interior

FISH AND WILDLIFE SERVICE

New England Ecological Services Field Office 70 Commercial Street, Suite 300

Concord, NH 3301-5094 Phone: (603) 223-2541 Fax: (603) 223-0104

In Reply Refer To:

Project code: 2023-0034821 Project Name: 611940 - SOMERVILLE- BRIDGE REPLACEMENT, S-17-016 (3GF), WEBSTER AVENUE OVER MBTA & BMRR

Subject: Not Likely to Adversely Affect Concurrence verification letter for the '611940 -

SOMERVILLE- BRIDGE REPLACEMENT, S-17-016 (3GF), WEBSTER AVENUE

OVER MBTA & BMRR' project under the December 13, 2024, FHWA, FRA, FTA Programmatic Biological Opinion for Transportation Projects within the Range of the Indiana Bat, Northern Long-eared Bat, and Tricolored Bat.

To whom it may concern:

This letter records the determination of effects to federally listed (or proposed) bat species anticipated to result from the 611940 - SOMERVILLE- BRIDGE REPLACEMENT, S-17-016 (3GF), WEBSTER AVENUE OVER MBTA & BMRR (the Project). This determination is based upon information you entered into the assisted determination key (Dkey) associated with the above referenced Programmatic Biological Opinion/Conference Opinion (PBO/PCO) in the U.S.

Fish and Wildlife Service’s (Service) Information for Planning and Consultation (IPaC) system on the date listed above to verify that the Project may rely on the concurrence provided in the PBO/PCO to satisfy requirements under section 7(a)(2) of the Endangered Species Act of 1973 (ESA) (16 USC 1536), as amended.

Ensuring Accurate Determinations When Using IPaC:

The Service developed the IPaC system and this Dkey in accordance with the ESA and based on the PBO/PCO. All information submitted by the project proponent into IPaC must accurately represent the full scope and details of the Project.

Failure to accurately represent or implement the Project as detailed in the Dkey invalidates this letter. Answers to certain questions in the Dkey commit the project proponent to implementation of conservation measures that must be followed for the ESA determinations to remain valid. Carefully review this letter, your ESA requirements are NOT yet complete.

Determinations:

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Based on the information you provided (Project Description shown below), you have determined that the Project is within the scope and adheres to the criteria of the PBO/PCO, including the adoption of applicable avoidance and minimization measures. Based on your IPaC submission and the PBO/PCO, the Project is consistent with the following effect determinations:

Species Listing Status Determination Tricolored Bat (Perimyotis subflavus) Proposed

Endangered

NLAA

The tricolored bat is proposed for listing as endangered under the ESA, but not yet listed. For actions that may affect a proposed species, agencies cannot consult, but they can confer under the authority of section 7(a)(4) of the ESA. Such conferences can follow the procedures for a consultation and be adopted as such if the proposed species is listed. Should the tricolored bat be listed, agencies must review projects that are not yet complete, or projects with ongoing effects within the tricolored bat range that previously received a no effect or not likely to adversely affect (NLAA) determination from the key to confirm that the determination is still accurate.

The Service has 14 calendar days to notify the lead Federal action agency or designated non-federal representative if we determine that the Project does not meet the criteria for a NLAA determination under the PBO/PCO. If the Service does not notify the lead Federal action agency or designated non-federal representative within that timeframe, you may proceed with the Project under the terms of the NLAA concurrence provided in the PBO/PCO. This verification period allows Service Field Offices to apply local knowledge to implementation of the PBO, as we may identify a small subset of actions having impacts that were unanticipated. In such instances, Service Field Offices may request additional information that is necessary to verify inclusion of the proposed action under the PBO/PCO.

If the Project is modified, or new information reveals that it may affect the Indiana bat, northern long-eared bat, or tricolored bat in a manner or to an extent not considered in the PBO/PCO, further review to conclude the requirements of ESA section 7(a)(2) may be required.

For Proposed Actions that include bridge/culvert or structure removal, replacement, and/or maintenance activities:

If your initial bridge, culvert, or structure assessment failed to detect Indiana bat, northern long-eared bat, or tricolored bat use or occupancy, yet bats are later detected prior to, or during construction, promptly notify the local Service Field Office within 2 working days of the discovery. In addition, please document whether incidental take occurred, and if so, the type (i.e.

kill or harm) and amount (i.e. number of individuals) and submit documentation to the local Service Field Office within 5 working days from the completion of the bridge, culvert, or structure construction (use Appendix E - Post Assessment Discovery of Bats at Bridge/Culvert or Structure Form in the User’s Guide). In these instances, potential incidental take of Indiana bats, northern long-eared bats, or tricolored bats may be exempted provided that the take is reported to the Service. In these instances, potential incidental take of Indiana bats, northern long-eared bats, or tricolored bats may be exempted provided that the take is reported to the Service.

Proposal No. 611940-136645

A00844 - 4 https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat

If the Project may affect any other federally listed or proposed species and/or designated critical habitat, additional consultation between the lead Federal action agency and this Service Field Office is required for those species/designated critical habitat. If the Project has the potential to take bald or golden eagles, additional coordination with the Service under the Bald and Golden Eagle Protection Act may also be required. In either of these circumstances, please advise the lead Federal action agency to contact this Service Field Office

The following species may occur in your project area and are not covered by this determination:

Monarch Butterfly Danaus plexippus Proposed Threatened

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PROJECT DESCRIPTION

The following project name and description was collected in IPaC as part of the endangered species review process.

NAME

611940 - SOMERVILLE- BRIDGE REPLACEMENT, S-17-016 (3GF), WEBSTER

AVENUE OVER MBTA & BMRR

DESCRIPTION

611940 - SOMERVILLE- BRIDGE REPLACEMENT, S-17-016 (3GF), WEBSTER

AVENUE OVER MBTA & BMRR

SOMERVILLE - BRIDGE REPLACEMENT S-17-016 (3GF) WEBSTER AVENUE

This project includes the replacement of Webster Avenue Bridge No. S-17-016 (3GF) over the MBTA & BMRR, reconstruction of each roadway approach between Prospect Street and Everett Street, exclusive of the intersections. In addition to the replacement of the bridge, Newton Street will be realigned west and east of the bridge, eliminating the skewed intersection by splitting the intersection into two “tee” intersections. Newton Street (West) will intersect Webster Avenue south of the proposed bridge and accommodate two-way traffic. Newton Street (East) of Webster Avenue will intersect with Webster Avenue north of the proposed bridge and remain one-way eastbound. The work along each section of Newton Street will be less than 500 ft in length.

Monarch Butterfly: Proposed Threatened Species. Due to MassDOT's enrollment in the Monarch Butterfly Nationwide CCAA, the action is Not Likely to Jeopardize the continued existence of the monarch butterfly.

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The approximate location of the project can be viewed in Google Maps: https:// www.google.com/maps/@42.3778258,-71.0958284,14z

Proposal No. 611940-136645

A00844 - 7 https://www.google.com/maps/@42.3778258,-71.0958284,14z https://www.google.com/maps/@42.3778258,-71.0958284,14z

1.

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DETERMINATION KEY RESULT

Based on your answers provided, this project(s) may affect, but is not likely to adversely affect the Indiana bat, northern long-eared bat or tricolored bat, therefore, consultation with the U.S.

Fish and Wildlife Service pursuant to Section 7(a)(2) of the Endangered Species Act of 1973 (ESA) (87 Stat. 884, as amended 16 U.S.C. 1531 et seq.) is required. However, also based on your answers provided, this project may rely on the concurrence provided in the Programmatic Biological Opinion/Conference Opinion for Transportation Projects in the Range of the Indiana bat, northern long-eared bat, and tricolored bat, dated December 13, 2024.

QUALIFICATION INTERVIEW

Which Federal Agency is the lead federal agency the action?

A) Federal Highway Administration (FHWA) Does the Action Area intersect the species list area of the tricolored Bat (TCB)?

Automatically answered Yes [Semantic] Is any portion of the action area within a 0.5 mile radius of an entrance/opening to any known NLEB or TCB hibernacula?

Note: The map queried for this question contains proprietary information and cannot be displayed. If you need additional information, please contact the Field Office listed in the letterhead of this letter.

Automatically answered No Does your project's activities include raising the road profile above the tree canopy in documented habitat for the Indiana bat, NLEB, or TCB?

Note: For the definition of documented habitat, refer to Appendix A: https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat

No Is your project located within a karst area?

No Will the project include bridge, culvert, or structure removal, replacement, and/or alteration activities?

Note: For definitions of bridge, culvert, and structure, refer to Appendix A: https:// www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat.

Yes Do your project’s activities involve tree removal/trimming, temporary lighting, new/ additional permanent lighting, ground disturbance, percussives that involves noise/ vibration above existing background levels, vibrations, or slash pile burning?

Yes

Proposal No. 611940-136645

A00844 - 8 https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat https://www.fws.gov/media/users-guide-range-wide-programmatic-consultation-indiana-bat-and-northern-long-eared-bat

8.

9.

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Is there suitable summer habitat for the Indiana bat, NLEB, or TCB within the project action area?

Note: See the Service's summer survey guidance for current definitions of suitable habitat [https://www.fws.gov/ midwest/endangered/mammals/inba/inbasummersurveyguidance.html].

No Will the project include bridge removal, replacement, and/or alteration activities?

Yes Has a Bridge Bat Assessment been conducted within the last 24 months to determine if the bridge is being used by the Indiana bat, NLEB, or TCB? If yes, upload assessment.

Note: Refer to the Service’s current survey guidance for acceptable assessment practices and validity timeframe of bridge/culvert and structure bat assessments: https://www.fws.gov/library/collections/range-wide-indiana-bat-and-northern-long-eared-bat-survey-guidelines.

Yes

SUBMITTED DOCUMENTS

611940_ Somerville BA Letter.pdf https://ipac.ecosphere.fws.gov/project/

DNINLSJNQZBKDMVTMSZJR4UZGQ/

projectDocuments/177629929

Please select one of the following results of the Bridge Bat Assessment:

c) Indicates the absence of Indiana bats, NLEBs, or TCBs roosting in/under the bridge (no bats, guano, etc.)?

Does the project include culvert removal, replacement, and/or alteration activities?

No Does the project include structure removal, replacement, and/or alteration activities?

No Does the Action Area intersect the species list area of the tricolored Bat (TCB)?

Automatically answered Yes

PROJECT QUESTIONNAIRE

Have you made a No Effect determinations for all other species included on the FWS IPaC generated species list?

No Have you made a May Affect determination for any other species on the FWS IPaC generated list?

Yes Please enter the date of the bridge assessment.

10/10/2025

Proposal No. 611940-136645

A00844 - 9 https://www.fws.gov/midwest/endangered/mammals/inba/inbasummersurveyguidance.html https://www.fws.gov/midwest/endangered/mammals/inba/inbasummersurveyguidance.html https://www.fws.gov/library/collections/range-wide-indiana-bat-and-northern-long-eared-bat-survey-guidelines https://www.fws.gov/library/collections/range-wide-indiana-bat-and-northern-long-eared-bat-survey-guidelines https://ipac.ecosphere.fws.gov/project/DNINLSJNQZBKDMVTMSZJR4UZGQ/projectDocuments/177629929 https://ipac.ecosphere.fws.gov/project/DNINLSJNQZBKDMVTMSZJR4UZGQ/projectDocuments/177629929 https://ipac.ecosphere.fws.gov/project/DNINLSJNQZBKDMVTMSZJR4UZGQ/projectDocuments/177629929 https://ipac.ecosphere.fws.gov/project/DNINLSJNQZBKDMVTMSZJR4UZGQ/projectDocuments/177629929

AVOIDANCE AND MINIMIZATION MEASURES (AMMS)

This determination key result includes the commitment to implement the following Avoidance and Minimization Measures (AMMs):

GAMM1

Ensure all operators, employees, and contractors working in areas of Indiana bat, NLEB, or TCB suitable habitat are aware of all Transportation Agency environmental commitments, including all applicable AMMs.

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DETERMINATION KEY DESCRIPTION: FHWA, FRA, FTA

PROGRAMMATIC CONSULTATION FOR TRANSPORTATION

PROJECTS AFFECTING IBAT, NLEB, OR TCB

This key was last updated in IPaC on February 24, 2026. Keys are subject to periodic revision.

This decision key is intended for projects/activities funded or authorized by the Federal Highway Administration (FHWA), Federal Railroad Administration (FRA), and/or Federal Transit Administration (FTA), which may require consultation with the U.S. Fish and Wildlife Service (Service) under Section 7 of the Endangered Species Act (ESA) and may affect the federally listed endangered Indiana bat (Myotis sodalis), northern long-eared bat (Myotis septentrionalis), and/or federally proposed endangered tricolored bat (Perimyotis subflavus).

This decision key should only be used to verify project applicability with the Service’s Programmatic Biological Opinion/Conference Opinion for Transportation Projects in the Range of the Indiana bat, northern long-eared bat, and tricolored bat, dated December 13, 2024. The programmatic consultation limited transportation activities that may affect the covered bat species and addresses situations that are both likely and not likely to adversely affect the covered bat species. This decision key will assist in identifying the effect of a specific project/activity and the applicability of the programmatic consultation. The programmatic consultation is not intended to cover all types of transportation actions. Activities outside the scope of the programmatic consultation, or that may affect ESA-listed species other than the Indiana bat, northern long-eared bat, or tricolored bat, or their designated critical habitat, may require additional ESA Section 7 consultation.

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IPAC USER CONTACT INFORMATION

Agency: Massachusetts Department of Transportation Name: Emily Puglisi Address: 10 Park Plaza City: Boston State: MA Zip: 02116 Email emily.a.puglisi@dot.state.ma.us Phone: 6178964424

LEAD AGENCY CONTACT INFORMATION

Lead Agency: Federal Highway Administration

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