Title: U. S. COAST GUARD AUXILIARY EIGHT EASTERN REGION AID VERIFIER TRAINING
1U. S. COAST GUARD AUXILIARYEIGHT EASTERN
REGIONAID VERIFIER TRAINING
2U. S. COAST GUARD AUXILIARYEIGHT EASTERN
REGIONAID VERIFIER TRAINING
- BRIDGE DISCREPANCY REPORTING
- 02APR03
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3INDEX TO TOPICS
- INDEX TO TOPICS
- INTRODUCTION AND BACKGROUND
- GENERAL BRIDGE LIGHTING REQUIREMENTS
- FIXED BRIDGE LIGHTING
- LIGHTING FOR VERTICAL LIFT BRIDGES
- LIGHTING FOR SWING SPAN BRIDGES
- LIGHTING FOR BASCULE BRIDGES
- BRIDGE LATITUDE / LONGITUDE POSITION DATA USING
GPS / DGPS - SUMMARY NOTES -- REPORTING BRIDGE DISCREPANCIES
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5 BRIDGE LIGHTING REQUIREMENTS
- ANYONE CAN AND SHOULD REPORT DISCREPANCIES
- BRIDGE LIGHTING IS REQUIRED
- AS PRESCRIBED BY THE COAST GUARD DISTRICT
COMMANDER FOR BRIDGES IN NAVIGABLE WATERWAYS - FROM SUNSET TO SUNRISE
- IN PERIOD OF REDUCED VISIBILITY (LESS THAN ONE
MILE) - TO BE VISIBLE FOR ONE MILE
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6FIXED BRIDGE LIGHTING
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- THE CENTER OF THE MAIN CHANNEL AND ALTERNATE
CHANNELS (IF ANY) ARE MARKED USING 360 DEGREE
FIXED GREEN LIGHTS WHICH FORM A RANGE IN THE
CENTER OF THE SPAN. THESE ARE CALLED - "MAIN CHANNEL CENTER LIGHTS" OR
- "ALTERNATE CHANNEL CENTER LIGHTS
- ( A on the diagram)
7FIXED BRIDGE LIGHTING
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- IF THERE IS AN ALTERNATE CHANNEL, THEN THE MAIN
CHANNEL IS MARKED BY THREE VERTICAL 180 DEGREE
FIXED WHITE LIGHTS LOCATED ABOVE THE GREEN MAIN
CHANNEL CENTER LIGHT. THESE ARE CALLED - "MAIN CHANNEL LIGHTS"
8FIXED BRIDGE LIGHTING
- Note
- Bridges display lights that are specifically
defined by Coast Guard permit. - The lighting configurations may vary from the
general descriptions in this presentation. - Example A Saint Louis bridge displays Main
Channel Lights with flashing green
characteristics (versus fixed white
characteristics).
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9FIXED BRIDGE LIGHTING
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- BRIDGE PIERS ON THE LEFT DESCENDING (LD) AND
RIGHT DESCENDING (RD) SIDES OF A NAVIGABLE
CHANNEL SHOW 180 DEGREE FIXED RED LIGHTS ON BOTH
THE DOWNSTREAM (D/S) AND UPSTREAM (U/S) ENDS OF
THE PIER. THIS LIGHT IS CALLED A - "PIER LIGHT
- ( B on the diagram)
10FIXED BRIDGE LIGHTING
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- WHERE THE NAVIGABLE CHANNEL (MAIN CHANNEL OR
ALTERNATE CHANNEL) IS LOCATED BETWEEN BRIDGE
PIERS BUT DOES NOT EXTEND ALL THE WAY TO A BRIDGE
PIER, THEN THE EXTENT OF THE CHANNEL IS MARKED BY
180 DEGREE FIXED RED LIGHTS LOCATED ON THE BRIDGE
SPAN ON BOTH THE DOWNSTREAM (D/S) AND UPSTREAM
(U/S) SIDES OF THE SPAN. THIS LIGHT IS CALLED A - "CHANNEL MARGIN LIGHT (C on diagram)
11TYPICAL FIXED BRIDGE LIGHTING
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12- BRIDGE LIGHTING TYPES
- "A" -- MAIN OR ALTERNATE CHANNEL CENTER LIGHT
(360 DEGREES GREEN) - "B" -- PIER LIGHT (180 DEGREES RED)
- "C" -- CHANNEL MARGIN LIGHT (180 DEGREES RED)
- "D" -- MAIN CHANNEL LIGHTS (THREE VERTICAL
LIGHTS, 180 DEGREES WHITE) - LOCATION MUST BE SPECIFIED
- "LD" (LEFT DESCENDING) OR "RD" (RIGHT DESCENDING)
FOR MARGIN AND PIER LIGHTS - "U/S" (AS VIEWED FROM UPSTREAM) OR "D/S" (AS
VIEWED FROM DOWNSTREAM) - "MAIN" OR "ALTERNATE" CHANNEL
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13EXAMPLE VIEWED FROM UPSTREAM
- BRIDGES MAY ALSO EXHIBIT AIRCRAFT CLEARANCE
LIGHTS REQUIRED BY THE FAA. - DISCREPANCIES SHOULD BE REPORTED TO THE NEAREST
FAA FACILITY, NOT ON THE CG BRIDGE REPORT
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14HOW WOULD EACH LIGHT BE DESIGNATED WHEN VIEWING
FROM DOWNSTREAM?
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15FIXED BRIDGES MAIN AND ALETRNATE
CHANNELS(EXAMPLE AS VIEWED FROM UPSTREAM)
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BRIDGES MAY ALSO EXHIBIT AIRCRAFT CLEARANCE
LIGHTS REQUIRED BY THE FAA. DISCREPANCIES SHOULD
BE REPORTED TO THE NEAREST FAA FACILITY, NOT ON
THE CG BRIDGE REPORT
16HOW WOULD EACH LIGHT BE DESIGNATED WHEN VIEWING
FROM DOWNSTREAM?
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17A VERTICAL LIFT BRIDGE
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18LIGHTING FOR VERTICAL LIFT BRIDGES
WHEN THE BRIDGE IS IN ANY POSITION OTHER
THAN FULLY RAISED, THE CENTER OF THE LIFT BRIDGE
SPAN IS MARKED BY TWO 180 DEGREE FIXED RED
LIGHTS -- ONE FACING UPSTREAM AND THE OTHER
DOWNSTREAM.
- WHEN FULLY RAISED, THE CENTER OF THE SPAN SHOWS
TWO 360 DEGREE FIXED GREEN LIGHTS. EACH OF THESE
RED AND GREEN LIGHTS IS CALLED A - "RED LIFT SPAN LIGHT" or "GREEN LIFT SPAN LIGHT"
(identified on the graphic below as "A")
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19LIGHTING FOR VERTICAL LIFT BRIDGES
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- EACH LIFT PIER, OR AN ATTACHED PROTECTION PIER,
IS MARKED BY A 180 DEGREE FIXED RED LIGHT ON BOTH
THE DOWNSTREAM (D/S) AND UPSTREAM (U/S) ENDS OF
THE PIER. THIS LIGHT IS CALLED A - "LIFT PIER LIGHT" or "PIER LIGHT" (identified on
the graphic below as "B")
20LIGHTING FOR VERTICAL LIFT BRIDGES
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- A THIRD PIER LIGHT, IN ADDITION TO THE TWO (U/S
AND D/S) PIER LIGHTS, MAY BE REQUIRED IF THE LIFT
AND PROTECTION PIERS ARE NOT STRAIGHT ON THEIR
CHANNEL FACES. THIS LIGHT IS A 180 DEGREE FIXED
RED LIGHT MOUNTED IN THE MIDDLE OF THE BRIDGE
PIER IN LINE WITH THE BRIDGE AXIS. THIS LIGHT IS
CALLED AN - "AXIS LIGHT" (identified on the graphic below
as "C")
21MINIMUM LIGHTING VERTICAL LIFT BRIDGE
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(EXAMPLE AS VIEWED FROM UPSTREAM)
NOTE SOME LIFT BRIDGES, ESPECIALLY THOSE IN
AUTOMATIC OR SEMIAUTOMATIC OPERATION, MAY SHOW
ADDITIONAL LIGHTS IN BOTH THE U/S DIRECTION AND
THE D/S DIRECTION. THESE ARE AUTHORIZED ON A
CASE BY CASE BASIS. IN SOME CASES, COAST GUARD
LIGHT LISTS AND NEWER CORPS OF ENGINEER CHARTS
INCLUDE DESCRIPTIONS AND USAGE OF SPECIAL BRIDGE
LIGHTING.
22A SINGLE-LEAF BASCULE BRIDGE
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23A DOUBLE-LEAF BASCULE BRIDGE
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24LIGHTING FOR DOUBLE LEAF BASCULE BRIDGES
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- EACH BASCULE BRIDGE PIER IS MARKED BY A 180
DEGREE FIXED RED LIGHT ON BOTH THE DOWNSTREAM
(D/S) AND UPSTREAM (U/S) ENDS OF THE PIER. THIS
LIGHT IS CALLED A - "DRAW PIER LIGHT" or "PIER LIGHT"
- WHEN A THE BRIDGE IS IN ANY POSITION OTHER THAN
FULLY RAISED., THE CENTER OF THE BRIDGE SPAN IS
MARKED BY TWO 180 DEGREE FIXED RED LIGHTS (ONE ON
EACH LEAF SPAN) ON BOTH THE UPSTREAM SIDE AND ON
THE DOWNSTREAM SIDE. WHEN FULLY RAISED, THESE
LIGHTS SHOW 180 DEGREE FIXED GREEN LIGHTS. EACH
OF THESE IS CALLED A - "RED LEAF SPAN LIGHT" or "GREEN LEAF SPAN LIGHT"
- A THIRD PIER LIGHT, IN ADDITION TO THE TWO (U/S
AND D/S) DRAW PIER LIGHTS, MAY BE REQUIRED IF THE
DRAW PIERS AND ATTACHED PROTECTION PIERS ARE NOT
STRAIGHT ON THEIR CHANNEL FACES. THIS LIGHT IS A
180 DEGREE FIXED RED LIGHT MOUNTED IN THE MIDDLE
OF THE APPLICABLE DRAW PIER IN LINE WITH THE
BRIDGE AXIS. THIS LIGHT IS CALLED AN - "AXIS LIGHT"
25MINIMUM LIGHTING FOR DOUBLE-LEAF BASCULE BRIDGES
(EXAMPLE AS VIEWED FROM UPSTREAM)
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26A DOUBLE-OPENING SWING SPAN BRIDGE
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27SPAN LIGHTING FOR DOUBLE-OPENING SWING SPAN
BRIDGES
- THREE LIGHT FIXTURES, EACH CONSISTING OF TWO 60
DEGREE RED LIGHTS AND TWO 60 DEGREE GREEN LIGHTS
(SEE DIAGRAM BELOW SHOWING SPAN IN CLOSED
POSITION), ARE LOCATED ATOP THE BRIDGE SPAN AT
EITHER END AND AT THE CENTER POINT. - EACH LENS IN A FIXTURE IS LOCATED AT 90 DEGREES
FROM ITS ADJACENT LENS AND SHOWS THROUGH AN ARC
OF 60 DEGREES. WHEN ONLY THE GREEN LENS ARE
SHOWING DIRECTLY UPSTREAM AND DOWNSTREAM FROM
THESE FIXTURES, THEN THE BRIDGE WOULD BE IN THE
FULLY OPEN POSITION. THIS LIGHT FIXTURE IS
CALLED A "SWING SPAN LIGHT"
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28SPAN LIGHTING FOR DOUBLE-OPENING SWING SPAN
BRIDGES (EXAMPLE AS VIEWED FROM UPSTREAM)
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- NOTE IN ORDER TO PROPERLY IDENTIFY ANY GREEN
SWING SPAN LIGHT DISCREPANCIES ON A CLOSED BRIDGE
(OR RED SWING SPAN LIGHT DISCREPANCIES ON AN OPEN
BRIDGE), IT WOULD BE NECESSARY TO VISUALLY
DETERMINE WHICH DIRECTION THE BRIDGE OPENS (OR
CLOSES). HOWEVER, NEVER REQUEST A BRIDGE TO OPEN
(OR CLOSE) IF ONLY TO VERIFY BRIDGE LIGHTING.
29SUMMARY NOTES -- REPORTING BRIDGE DISCREPANCIES
- FOR EXTINGUISHED LIGHTS, ALSO INDICATE
- IF THE LIGHT FIXTURE IS VISIBLE
- IF THERE IS A RED REFLECTIVE SQUARE OR DIAMOND
LOCATED IN PROXIMITY TO THE LOCATION YOU WOULD
EXPECT TO FIND A LIGHT
- ALL EXTINGUISHED LIGHTS AND ANY OTHER
DISCREPANCY THAT WOULD BE CONSIDERED A HAZARD TO
NAVIGATION SHOULD BE REPORTED IMMEDIATELY VIA
MARINE RADIO TO THE APPROPRIATE GROUP.
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