Attachment_2B_-_LCYA0230_Mar_2025.pdf

Los Algodones Bridge Inspection Report

Bridge elevation looking downstream

Structure Information B.IE.01-Inspection Type: Routine

RBI Number: LCYA0230 NBI #: 0304-0098

Inspection Date: 03/27/2025 Last Inspection Date: 02/10/2023

Area Office: LCB-Yuma Area Office Field Office: Not Applicable Project: 0045-Boulder Canyon Project-Hoover Division

Primary Operating Entity: Imperial Irrigation District

State Route 186 OVER All American Canal

Bridge Type: Type 1

Report Approval Team Leader: Jeff Lynn Reviewer: Dustin Johnson

Approver: Dustin Johnson Approved Date: 06/02/2025

Structural Evaluation Summary

Inspection of the bridge deck was obstructed by the asphalt wearing surface. The deck appears to be in good condition with no obvious signs or cracks or spalls. Reflection cracking is apparent in the asphalt surface at the bridge joints. The pavement is showing moderate wear. Two conduits are attached to the downstream curb. One conduit, belonging to the telephone company, has several openings at the conduit joints that has not changed since the last inspection. Advisory signs on both sides of the gate control deck warn pedestrians the deck is not a sidewalk.

Inspection of the superstructure and substructure were limited to areas visible from the bridge deck and the canal banks. The visible portions of the superstructure and substructure are in satisfactory condition. A spall was observed on the right, upstream corner of the center slab above the supports and appears unchanged from the last inspection. The center slab is vertically offset from the adjacent slabs by 1 1/2 inches on the north end and 1 3/4 inches on the south end, this is changed from the previous inspection by 1/4 to 1/2 inch.

The channel is in good condition. The approach roadway is in satisfactory condition. Typical longitudinal and transverse cracking was observed, as well as surface wear. Weight limit and object marker signs posted at both approaches are functional and in good condition.

B.C.12-Bridge Condition Classification: F - Fair B.C.13 - Lowest Condition Rating Code: 6 -

SATISFACTORY

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

RBI #LCYA0230(Routine) Los Algodones Bridge, LCB-Yuma Area Office

Status Update: A resolution supporting Caltrans’s revised SR-186 alignment was adopted by the Fort Yuma Quechan Indian Tribal Council and submitted to Caltrans on December 8, 2023.

Throughout the Project Approval and Environmental Document (PA&ED) Phase for EA 11-43108, Caltrans has included Reclamation and the Imperial Irrigation District in its Project Development Team meetings and has requested input throughout the process.

Caltrans disseminated the Project Report for the PA&ED phase to its stakeholders for their review and comments. On April 18, 2025, Reclamation provided feedback indicating agreement with Caltrans’s recommendation for EA 11-43108 to progress into the Plans, Specifications, and Estimates (PS&E) phase.

Caltrans plans to continue its coordination with stakeholders as soon as funding is secured to proceed to subsequent development phases of the project (PS&E, Right of Way, Construction).

Recommendation: Plan and schedule for a new crossing to carry State Route 186 over the All-American Canal

Recommendation ID: 2019-2-A Category: Category 2 Recommendation Type: Previous Status: Incomplete >$20,000,001 Est. Completion:

Recommendation Classification: Other (describe in Recommendation/Status text)Component: Bridge Replacement Cost:

O&M Recommendations and Critical Findings

Category 1: Recommendations involving the correction of severe deficiencies where immediate and responsive action is required to ensure structural safety and operational integrity of a facility.

Category 2: Recommendations covering a wide range of important matters where action is needed to prevent or reduce further damage or preclude possible operational failure of a facility.

Category 3: Recommendations covering less important matters believed to be sound and beneficial suggestions to improve or enhance the O&M of a project or facility.

Critical Finding: A structural or safety related deficiency that requires immediate action to ensure public safety or the safety of Reclamation employees, contractors, or authorized users.

Definitions:

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Status Update:

Recommendation: Repair conduit on downstream curb.

Telephone conduit still disconnected

Recommendation ID: 2019-3-A Category: Category 3 Recommendation Type: Previous Status: Incomplete Est. Completion:

Recommendation Classification: ElectricalComponent: Deck Cost:

O&M Recommendations and Critical Findings

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Summary Bridge Inventory Data B.W.01 Year Built: 1938 B.G.11 Skew: 0

B.G.02 Total Bridge Length: 140.1 ft B.G.03 Max. Span Length: 20 ft

B.G.05 Bridge Width Out-to-Out: 27 ft B.G.06 Bridge Width Curb-to-Curb: 24 ft

B.SP.02 Number of Spans: 7 B.SP.03 Number of Beam Lines: 1

B.SP.04 Span Material: C01 (C01 - Reinforced concrete – cast-in-place)

B.SP.06 Span Type: S01 (S01 - Slab – solid)

B.SP.09 Deck Material and Type: C01 (C01 - Reinforced concrete – cast-in-place)

B.SP.10 Wearing Surface: B01 (B01 - Bituminous (asphalt))

B.SP.01 Span Configuration Designation: M1

Attendees: Jeffrey Lynn, Sara Barker, Frank Garcia, Argel Garcia, Rich Eastland

Time of Inspection: 7:00 A.M.

Temperature: 57F

Weather Description: Windy

Inspection Information

The bridge carries State Route 186 over the All-American Canal and provides sole access to the Andrade/Los Algodones Border Crossing which has roughly one million crossings annually. The bridge is part of a check structure which features seven radial gates controlled from a platform on the west (downstream) side of the bridge deck. The check structure regulates flows on the All-American Canal and delivers water to Mexico.

The bridge is a seven-span, concrete slab bridge. The three concrete slabs are each 18 inches thick and are supported intermittently by concrete piers. Each of the five center spans are 20 feet long and the end spans are 19.5 feet each for a total structure length of 140 feet. The bridge deck has a curb-to-curb width of 24 feet and an edge-to-edge width, including the gate control deck, of 32.2 feet. Concrete curbs, 18 inches wide by 9 inches tall, run along both sides of the roadway. The bridge deck has an asphalt concrete wearing surface.

The channel is concrete lined at the structure and earth lined upstream and downstream. The bridge is documented left to right looking downstream.

The bridge has no guardrails. Steel handrails consisting of three-inch diameter steel pipes are embedded in both concrete curbs. Additionally, a similar handrail is located on the downstream edge of the gate control deck.

Bridge Description

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Notes to Future Inspectors Roadway has high traffic volume. Warning signs and inspection vehicles with flashing lights are highly recommended to alert traffic of bridge inspection.

A boat-based inspection is recommended to inspect the above water bridge elements not visible from the canal banks. Inspection opportunities may be available if coordinated with IID gate maintenance.

Underwater inspection requires above average coordination. IID has indicated willingness to accommodate flow requests during significantly low water demand (typically between Christmas and New Year's Day). Next underwater inspection was due December 2024 but was delayed due to operational issues with the Reclamation dive teams. A small boat/kayak should be brought during the underwater inspection so the bearings and underside of the deck can be inspected during the outage.

Additional Inspection Notes and Deficiencies Caltrans Project EA 11-43108 - State Route (SR)-186 Realignment and New Bridge Project A resolution supporting Caltrans's revised SR-186 alignment was adopted by the Fort Yuma Quechan Indian Tribal Council and submitted to Caltrans on December 8, 2023.

Caltrans disseminated the Project Report for the PA&ED phase to its stakeholders for their review and comments. On April 18, 2025, Reclamation provided feedback indicating agreement with Caltrans's recommendation for EA 11-43108 to progress into the Plans, Specifications, and Estimates (PS&E) phase.

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

APPROACH

B.AP.01 Approach Roadway Alignment

G

Approach Roadway Condition

6 - Satisfactory Approaches were in satisfactory condition. There was shoving and 3 inch by 5 inch potholes in the asphalt where it met the bridge at the north joint and block cracking at the south approach. The asphalt was uniformly worn with polished aggregates.

Approach Guardrail G

Approach Signs G

DECK

B.C.01 Deck Condition Rating

7 - Good Deck had an asphalt wear course on it so direct inspection of the concrete deck was not possible.

B.C.05 Bridge Railing Condition Rating

7 - Good

B.C.06 Bridge Railing Transitions Condition Rating

6 - Satisfactory

Condition Rating Codes for B.C.01 to B.C.07 Serious Condition – Major defects; strength and/or performance of the component is seriously affected.

Condition typically necessitates more frequent monitoring, load restrictions, and/or corrective actions.

3N Not Applicable – Component does not exist.

9 Excellent Condition – Isolated inherent defects.

8 Very Good Condition – Some inherent defects.

Critical Condition – Major defects; component is severely compromised. Condition typically necessitates frequent monitoring, significant load restrictions, and/or corrective actions in order to keep the bridge open.

27 Good Condition – Some minor defects.

6 Satisfactory Condition – Widespread minor or isolated moderate defects.

“Imminent” Failure Condition – Bridge is closed to traffic due to component condition. Repair or rehabilitation may return the bridge to service.

15 Fair Condition – Some moderate defects; strength and performance of the component are not affected.

Failed Condition – Bridge is closed due to component condition, and is beyond corrective action.

Replacement is required to restore service.

04 Poor Condition – Widespread moderate or isolated major defects; strength and/or performance of the component is affected.

Condition Rating Code Equivalents for Sub-Components G = Good (7-9) F = Fair (5-6) P = Poor (0-4) N = Not Applicable UNK = Unknown

Field Inspection Report

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

B.C.08 Bridge Joints Condition Rating

Reflexive cracking at the joints was observed in the asphalt. Joint offset of the center bridge deck slab appears to have changed since the last inspection.

Deck Wearing Surface

F Wearing surface has polished aggregates.

Deck Curbs, Sidewalks, and Median

G

Deck Drains and Drainage

G

Deck Utilities F Disconnected utility conduit has not been addressed.

SUPERSTRUCTURE

B.C.02 Superstructure Condition Rating

6 - Satisfactory Spall on upstream pier two has not changed since the last inspection.

B.C.07 Bridge Bearings Condition Rating

Bridge bearings are not able to be inspected during top side inspection.

Superstructure Diaphragms and Bracing

N

Superstructure Coating

N

SUBSTRUCTURE

B.C.03 Substructure Condition Rating

7 - Good

B.AP.03 Scour Vulnerability

AB-T

B.AP.04 Scour Plan of Action

A scour POA is not required.

Abutment Wingwalls G

CHANNEL

B.C.09 Channel Condition Rating

7 - Good

B.AP.02 Overtopping Likelihood

Remote

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

B.ID.01 Bridge Number

IDENTIFICATION

0304-0098

B.ID.02 Bridge Name Los Algodones Bridge

B.ID.03 Previous Bridge No.

1938B.W.01 Year Built

B.L.01 State Code

B.L.02 County Code

B.L.03 Place Code

B.L.04 Highway Agency District

B.L.05 Latitude

B.L.06 Longitude

B.L.07 Border Bridge Number

B.L.08 Border Bridge State or Country Code

B.L.09 Border Bridge Insp. Resp.

B.L.10 Border Bridge Designated Lead State

B.L.11 Bridge Location

B.L.12 Metropolitan Planning Organization

LOCATION

California

Imperial County

32.73775

-114.71739

N

6 miles NW of Yuma, Ari

N

B.CL.01 Owner

CLASSIFICATION

B.CL.02 Maint. Responsibility

B.CL.03 Federal or Tribal Land Access

B.CL.04 Historic Significance

B.CL.05 Toll

B.CL.06 Emergency Evacuation Designation

FL03 - Bureau of Reclamation (USBR)

LX - Other local agency

USBR - Bureau of Reclamation

N - Bridge is not eligible for the

N - Bridge does not carry a toll ro

B.RH.01A Bridge Railing Type

ROADSIDE HARDWARE

B.RH.01B Bridge Railing Year (YY)

B.RH.01C Bridge Railing Test Level

B.RH.02A Transition Type

B.RH.02B Transition Year (YY)

B.RH.02C Transition Test Level

B.G.01 NBIS Bridge Length

BRIDGE GEOMETRY

B.G.02 Total Bridge Length

B.G.03 Max Span Length

B.G.04 Min Span Length

B.G.05 Bridge Width Out-to-Out

B.G.06 Bridge Width Curb-to-Curb

B.G.07 Left Curb or Sidewalk Width B.G.08 Right Curb or Sidewalk Width

B.G.09 Approach Roadway Width

140.1

19.5

24.3

B.G.14 Sidehill Bridge N - Not a sidehill bridge

B.G.15 Irregular Deck Area

3782.7B.G.16 Calculated Deck Area

B.G.10 Bridge Median

B.G.11 Skew

B.G.12 Curved Bridge

B.G.13 Max Bridge Height

0 - No median

B.LR.01 Design Load

B.LR.02 Design Method

B.LR.03 Load Rating Date

B.LR.04 Load Rating Method

B.LR.05 Inventory Load Rating Factor B.LR.06 Operating Load Rating Factor B.LR.07 Controlling Legal Load Rating Factor

B.LR.08 Routine Permit Loads

LOADS AND LOAD RATING

HS15 - HS-15

LFR - Load Factor Rating

0.51

0.84

B.IR.01 NSTM Inspection Required

INSPECTION REQUIREMENTS

N - NSTM inspection not required.

B.IR.02 Fatigue Details

B.IR.03 UW Inspection Required Y - Underwater inspection required

N - Bridge does not have complex feB.IR.04 Complex Feature

B.C.01 Deck Condition Rating

COMPONENT CONDITION RATINGS

B.C.02 Superstructure Condition

B.C.03 Substructure Condition

B.C.04 Culvert Condition

B.C.05 Bridge Railing Condition

B.C.06 Bridge Railing Transitions Condition

B.C.07 Bridge Bearings Cond.

B.C.08 Bridge Joints Condition

B.C.09 Channel Condition Rating

B.C.10 Channel Protection Condition

B.C.11 Scour Condition Rating

B.C.12 Bridge Condition Classification

B.C.13 Lowest Condition Rating

B.C.14 NSTM Insp. Condition

B.C.15 UW Inspection Condition

7 - GOOD - Some minor defects.

6 - SATISFACTORY - Widespread

7 - GOOD - Some minor defects.

N - NOT APPLICABLE - Component

7 - GOOD - Some minor defects.

6 - SATISFACTORY - Widespread

7 - GOOD - Some minor defects.

F - Fair

6 - SATISFACTORY

B.AP.01 Approach Roadway Alignment

APPRAISAL

B.AP.02 Overtopping Likelihood

B.AP.03 Scour Vulnerability

B.AP.04 Scour Plan of Action

B.AP.05 Seismic Vulnerability

G - Good

1 - Remote – once every 100 years o

AB-T - TEMP - Stable for scour, pos

0 - A scour POA is not required.

SNBI Data

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

B.SP.02 # of Spans 7

B.SP.03 # of Beam Lines 1

C01 - Reinforced concrete – caB.SP.04 Span Material

B.SP.05 Span Continuity

B.SP.06 Span Type

B.SP.07 Span Protective System

2 - Continuous

S01 - Slab – solid

B.SP.08 Deck Interaction

B.SP.09 Deck Material and Type C01 - Reinforced concrete – ca

B01 - Bituminous (asphalt)B.SP.10 Wearing Surface

B.SP.11 Deck Protective System

B.SP.12 Deck Reinforcing Protective System

B.SP.13 Deck Stay-In-Place Forms 0 - None

M1

SPAN SETS

B.SB.02 No. of Substructure Units 2

B.SB.03 Substructure Material C01 - Reinforced concrete – ca

A06 - Abutment – gravityB.SB.04 Substructure Type

B.SB.05 Substructure Protective System 0 - None

B.SB.06 Foundation Type F01 - Footing – not on rock

0 - NoneB.SB.07 Foundation Protective System

A1

SUBSTRUCTURE SETS

B.SB.02 No. of Substructure Units 6

B.SB.03 Substructure Material C01 - Reinforced concrete – ca

P01 - Pier – wallB.SB.04 Substructure Type

B.SB.05 Substructure Protective System 0 - None

B.SB.06 Foundation Type F01 - Footing – not on rock

0 - NoneB.SB.07 Foundation Protective System

P1

B.F.02 Feature Location C - Carried on bridge

B.F.03 Feature Name State Route 186

3 - Principal Arterial – OtherB.H.01 Functional Classification

B.H.02 Urban Code

B.H.03 NHS Designation

B.H.04 National Highway Freight Network

99999

N - Non-NHS

N - Not on the NHFN

B.H.09 Annual ADT 13200

B.H.10 Annual ADTT 0

2011B.H.11 Year of Annual ADT

B.H.12 Highway Max Usable Vertical Clearance B.H.13 Highway Min Vertical Clearance B.H.14 Highway Min Horizontal Clearance, Left

99.9

99.9

N - Not a STRAHNET routeB.H.05 STRAHNET Designation

B.H.06 LRS Route ID

B.H.07 LRS Mile Point

B.H.08 Lanes On Highway

B.H.15 Highway Min Horizontal Clearance, Right B.H.16 Highway Max Usable Surface Width

B.H.17 Bypass Detour Length

B.H.18 Crossing Bridge Number

24.2

H1

HIGHWAY FEATURES

B.F.02 Feature Location B - Below bridge

B.F.03 Feature Name All American Canal

N - Not navigable watersB.N.01 Navigable Waterway

B.N.02 Navigation Min Vertical Clearance

B.N.03 Movable Bridge Max Navigation Vertical Clearance

B.N.04 Navigation Channel Width

B.N.05 Navigation Channel Min Horizontal Clearance B.N.06 Substructure Navigation Protection

W1

WATERWAY FEATURES

Highway Parent B.RT.01 Route Designation

B.RT.02 Route Number B.RT.03 Route Direction B.RT.04 Route Type B.RT.05 Service Type

H1 R01 186 2-T - TEMP - Two-way traffic - NS or EW 3 - State route 1 - Mainline

HIGHWAY ROUTES

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

POSTING STATUS DATA

B.PS.01 Load Posting Status B.PS.02 Posting Status Change Date

PP - Permanent - Posted

LOAD EVALUATION AND POSTING

B.EP.01 Legal Load Configuration B.EP.02 Legal Load Rating Factor B.EP.03 Posting Type B.EP.04 Posting Value

Is Load Posting Properly Installed (when required)? Yes

Load Rater Evaluation? No

LR.06 Load Rating Notes/Summary

3" asphalt wearing surface assumed, LOAD RATING SECTION

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Bridge elevation looking downstream

Bridge elevation looking upstream

Photographs

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

North approach looking south

Shoving and potholes in asphalt transition on North approach

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

South approach looking north

Block cracking at asphalt transition on south approach

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Reflexive cracking in the wearing surface at the pier four joint

Joint offset that pier four that is approximately 1 1/2"

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Reflexive cracking and potholes approximately 3" x 5" at the joint across pier two

Join the offset at span two that is approximately a 3/4"

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Typical deck wearing surface exhibiting polished aggregate

Spall at pier two still present

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

Telephone conduit still disconnected

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025

© OpenStreetMap contributors

Location: 6 miles NW of Yuma, Ari

Latitude/Longitude: 32.73775, -114.71739

Location Map

Team Lead: Jeff Lynn, Inspection Date: 03/27/2025