D D TYPE A1, A2 & B MICHIGAN DEPARTMENT OF TRANSPORTATION 5-40 CONNECTION. L4" x 4" x 3/8" Brace. C8 x 4.25 Strut. WT9 x 17.5.

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Collin Mosley
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1 Sign length minus Adjust to avoid interference with sign legend A Deck fascia A 6" Equal Equal 6" Sign length (L) varies 6 to 12 PLAN 0 CONNECTION (DECK FASCIA) Angle connection assembly F Face of concrete I-beam Beam \ E bottom flange 3 1/ B Anchor spacing - see sheet 4 of 11 for length E C D D WT9 x 17.5 L4" x 4" x 3/8" Brace Deck fascia C8 x 4.25 Strut (aluminum) 1 Detail B O L4" x 4" x 3/8" Brace Detail C Bent > 7" x 8" x 3/8" (aluminum) 5/8"! stainless bolt, (2) flat washers, & nylon insert lock nut ** B C 1" Sign length minus 1" Sign length (L) varies 6 to 12 PLAN 5-40 CONNECTION (CONCRETE I-BEAM OPTION SHOWN) BRIDGE CONNECTION - TYPE A1 F DEPARTMENT DIRECTOR Kirk T. Steudle FOR Michigan Department of Transportation PREPARED BY DESIGN DIVISION APPROVED BY: DIRECTOR, BUREAU OF FIELD SERVICES BRIDGE SIGN CONNECTION TYPE A1, A2 & B DRAWN BY: CHECKED BY: DHD AJU APPROVED BY: DIRECTOR, BUREAU OF HIGHWAY DEVELOPMENT 1 OF 12

2 Drill 9/16"! holes in angle for 1/! stainless steel Deck overhang varies adhesive anchor bolt (4) required * Connect brace to 1-0" 4 1/ Min Angle connection assembly *This brace configuration may only be used with barrier type bridge railing L4" x 4" x 3/8" Brace (Eliminate when strut either beam or length is less than 2-6") barrier, but not both. Strut length C8 x 4.25 Strut (aluminum) Angle connection assembly WT9 X 17.5 Sign height (H) 2-6" Max Bent > 7" x 8" x Bridge beam (type varies) 3/8" (aluminum) A L4"x 4"x 3/8" Brace (eliminate when strut length is less than 2-6") * This is an alternative brace configuration for concrete I-beams SECTION F-F 5-40 CONNECTION (CONNECTION TO CONCRETE BEAM OPTION) Steel bridge beam 5/8"! galv. high strength bolt. (4) required per WT ** 6" L4" x 4" x 3/8" Brace (eliminate when strut length is less than 2-6") Angle connection assembly This is an alternative brace configuration for steel I-beams SECTION F-F 5-40 CONNECTION (CONNECTION TO STEEL BEAM OPTION TO BE USED WHEN NO BRIDGE BARRIER RAILING IS PRESENT) BRIDGE CONNECTION - TYPE A1 NOTES: Angle connection assembly is the same for connections to barrier, concrete I-beams and steel beams. section D-D and E-E for other details. 2 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

3 6 3/4" Min 1/ Gap Reg. washer Top of deck 10" Min 5" Min 5" Min Deck fascia Drill 13/16"! hole in channel for 3/4"! adhesive Nylon insert lock nut Nylon washer anchor bolt with extra thread, (2) flat washers, & nylon insert lock nut SECTION A-A NOTE: Typical for all sign connections. WT9 X 17.5 Drill 9/16"! hole in WT9 x 17.5 for 1/! stainless steel adhesive anchor 3/16" bolt (4) required per WT Top of deck Drill 9/16"! hole for 1/! stainless bolt, (2) flat washers & nylon insert lock nut. (3) required 7 x 8 x 3/8" Bent > 2 1/ 1 3/4" 3 1/ 4 1/ 4 1/ 1 1 7" 2 3/4" Min 2 3/4" Min 10" Min (aluminum) place 1/8" elastomeric (or Min Deck fascia equivalent) pad to cover entire surface area 5/8"! stainless bolt, (2) flat between steel and aluminum washers, & nylon insert lock nut. (2) required ** sections SECTION B-B L4" x 4" x 3/8" Brace WT5 x 9.5 Drill 9/16"! holes in angle for 1/! stainless steel adhesive anchor bolt L 4" x 4" x 3/8" x 1-6" Long Angle connection assembly 1 1/ 5" 5" 5" 1 1/ 1-6" SECTION D-D BRIDGE CONNECTION - TYPE A1 3 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

4 5/8"! 4 1/ Min Top of deck 3" stainless bolt, (2) flat washers, & nylon insert lock nut. (2) required ** C8 x 4.25 Strut (aluminum) length varies 7" x 8" x 3/8" Bent > 1 2 1/ Optional instead of the 2 bolts 1 1/ 10" Min. 2 3/4" 2 3/4" Min. Min. 7" 4 1/ 1 3 1/ 3 1/ 1 1/ 8" 1" Drill 9/16"! hole in wt for 1/! stainless steel adhesive anchor bolt (4) required per WT WT9 x 17.5 Place 1/8" elastomeric (or equivalent) pad to cover entire surface area between steel and aluminum sections 5/8"! stainless bolt, (2) flat washers, & nylon insert lock nut. (4) required - no welding allowed at this connection ** SECTION C-C L4" x 4" x 3/8" Brace place 1/8" elastomeric (or equivalent) pad to cover entire surface area between steel and aluminum sections Concrete I-beam 1 1/ NOTE: Brace may be eliminated for strut lengths less than 2-6". L4" x 4" x 3/8" x 1-6" Long Flange Dimensions E 3 3/8" Max. embed A B L4" x 4" x 3/8" Brace WT5 X 9.5 Brestressed I-beam depth 28" (Type I) 36" (Type II) 45" (Type III) 54" (Type IV) A B D E 4" 3 1/16" 2 13/16" 2 13/16" 4" 4 1/ 2 13/16" 2 13/16" 4 1/ 6 1/8" 3 3/16" 3 3/16" 5 1/ 7 3 7/8" 3 7/8" Drill 9/16"! hole in angle for 1/! stainless steel adhesive anchor bolt (4) required D 4 1/ Angle connection assembly 5/8"! high strength bolt, (2) flat washers, & nylon insert lock nut ** SECTION E-E Anchor spacing = (Sign length minus ) x COS O Strut length = (Sign length minus ) x SIN O + 5" * ADHESIVE ANCHOR MINIMUM EFFECTIVE ULTIMATE STRENGTHS INSTALLED IN CONC. BEAM FLANGE INSTALLED IN DECK FASCIA INSTALLED IN T-BEAM/BARRIER Tension (lbs) Shear (lbs) Tension (lbs) Shear (lbs) Tension (lbs) Shear (lbs) A1 Connection A2 Connection * Effective ultimate strength is equal to the ultimate strength modified by the appropriate edge distance and anchor spacing reduction factors recommended by the manufacturer. BRIDGE CONNECTION - TYPE A1 4 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

5 Face of H concrete L7 X 4 X 3/8" H L7" X 4" X 3/8" H G G G B H G Eliminate middle arm for L less than or equal to 8-0" WT9 X 17.5 I Detail D J Detail B B I J Detail C L/2 L/2 Sign length (L) (varies 6-0" to 12-0") PLAN 5-40 CONNECTION (CONCRETE T-BEAMS & CONCRETE BARRIERS) L7" X 4" X 3/8" 1 7/8" 2 1/8" 4 1/ 13/16"! Holes in angle for adhesive anchor 6 3/4" 6" 6" 2 1/8" 1 7/8" 3/4"! stainless steel bolt SECTION G-G BRIDGE CONNECTION - TYPE A2 5 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

6 6" Min. 6 3/4" Min. L7" x 4" x 3/8" Deck overhang Varies 4 1/ 1/4 11" Min. 13/16"! Holes in angle for adhesive anchor 3/4 "! stainless steel bolt SECTION H-H (AT CONCRETE T-BEAM BRIDGES) 6 3/4" Min. L7" x 4" x 3/8" Bottom of barrier 4 1/ 6" 13/16"! Holes in angle for adhesive anchor 3/4"! stainless steel bolt SECTION H-H (AT CONCRETE BARRIER RAILING TYPE 4, TYPE 5 OR AESTHETIC PARAPET TUBE RAILING) NOTE: chart on sheet 4 for adhesive anchor strengths. BRIDGE CONNECTION - TYPE A2 6 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

7 5/8"! stainless bolt, (2) flat washers, & nylon insert lock nut. (2) required ** 1" 4" 4" 1 x 4" x 3/8" > 4" SECTION I-I NOTE: Place 1/8" elastomeric (or equivalent) pad to cover the entire surface area between steel and aluminum surfaces. Bent > 7" x 8" x 3/8" 1 1/ 2 1 1/ 2 3 1/ 5/8"! stainless bolt, (2) flat washers, & nylon insert lock nut. (2) required ** 3/16" SECTION J-J BRIDGE CONNECTION - TYPE A2 7 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

8 Adjust to avoid interference with Detail A Sign length minus K sign legend Steel girder web L3 1/ x 3 1/ x 3/8" x 7" Long > 7" x 9" x 3/8" K 6" Equal Equal 6" Sign length (L) varies 6 to 12 PLAN 0 CONNECTION Steel girder web 3 1/ L Anchor spacing - sheet 4 of 11 for length M WT9 x 17.5 C8 x 4.25 Strut (aluminum) 1 Detail B O Detail C Bent > 7" x 8" x 3/8" (aluminum) 5/8"! stainless bolt, (2) flatwashers, & nylon insert lock nut ** L M 1" Sign length minus 1" Sign length (L) varies 6 to 12 PLAN 5-40 CONNECTION (STEEL BEAM) BRIDGE CONNECTION - TYPE B 8 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

9 5/8"! galv. high strength bolt. (4) required per WT ** 3/16" 5/8"! stainless bolt, (2) flat washers and nylon insert lock nut (2) required ** 3/16" WT9 x /16" 9" 7 x 9 x 3/8" > Drill 9/16"! hole for 1/! stainless bolt, (2) flat 1 7" 1 4 1/ washers & nylon insert lock nut. (3) required Drill 9/16"! hole for 1/! stainless bolt, (2) flat washers & nylon insert lock nut. 2 1/ 3 1/ 1 4 1/ 7" L3 1/ x 3 1/ x 3/8" (3) required 7" x 8" x 3/8" Bent > (aluminum) 5/8"! stainless bolt, (2) flatwashers, & nylon insert lock nut. 5/8"! galv. high (2) required ** strength bolt. (4) required per WT ** SECTION K-K SECTION L-L NOTE: Place 1/8" elastomeric (or equivalent) pad to cover the entire surface area between steel and aluminum surfaces. 3" C8 x 4.25 Strut (aluminum) length varies 7" x 8" x 3/8" Bent > (aluminum) Optional instead 7" 1 4 1/ 1 2 1/ of the 2 bolts 1 1/ 3 1/ 3 1/ 5/8"! stainless bolt, (2) 1" Sign height (H) 2-6" Max. 5/8"! galv. high strength bolt. WT9 X 17.5 flatwashers, & nylon insert lock nut (2) required ** (4) required per WT ** 5/8"! stainless bolt, (2) flatwashers, & nylon insert lock nut (6) required ** SECTION M-M BRIDGE CONNECTION - TYPE B 9 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

10 Lock Nut threads beyond nut Steel w/ alum. column Flat washer 5.5 5/8" Dia. h.s. bolt 5.5 1/8" Elastomeric or equivalent pad to cover entire surface 5/8"! stainless bolt ** Flat washer 5.5 area between steel and aluminum sections. 5/8"! galv. high- strength bolt ** ** BOLT DETAIL L3 1/ x 3 1/ x 3/8" x 7" Long Place 1/8" elastomeric (or equivalent) pad to cover entire surface area between > 7" x 9" x 3/8" steel and aluminum sections 5/8"! stainless bolt ** Place 1/8" elastomeric O (or equivalent) pad to cover entire surface area between steel and DETAIL A Sign face Stem of WT aluminum sections 2 1/ R 1 4" 4" O Strut Bent > 7" x 8" x 3/8" (aluminum) Sign DETAIL B face 2 1/ 5/8"! stainless R 1 bolt ** 4" 4" Bent > 7" x 8" x 3/8" (aluminum) 4" Sign DETAIL C face 5/8"! stainless bolt ** 1 x 4" x 3/8" > 90 - O Sign face Adjust to avoid interference with sign legend and aluminum plate DETAIL D 10 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

11 NOTES: 1. Field verify bridge dimensions prior to fabrication. 2. Welding shall be in accordance with the current Standard Specifications for Construction. 3. All structural steel members shall be hot-dip galvanized in accordance with the current Standard Specifications for Construction. 4. All aluminum members shall be ASTM B 308 aluminum alloy 6061-T6 and shall conform to ASTM B 221. Aluminum plates must be ASTM B 308 aluminum alloy 6061-T6 and must be according to ASTM B 209. All plates must be free of sharp edges and irregularities. 5. Structural steel members shall conform to AASHTO M 270 grade All high-strength bolts, nuts and washers shall be in accordance with subsection and installed according to subsection D.7 of the current MDOT Standard Specifications for Construction except for stainless steel bolts, nuts and washers. 7. Stainless steel bolts and washers shall conform to ASTM A 320, class 1, grade B8. Nuts shall be self-locking nylon insert type and must conform to ASTM A 320, grade 8F. Stainless steel nuts and washers shall always accompany stainless steel bolts. Stainless steel bolts, nuts and washers shall be used at connections with aluminum members. All other connections shall utilize galvanized high strength bolts, nuts and washers unless otherwise specified. 8. O = Angle between sign and bridge. 9. All concrete anchors shall be chosen from the qualified product list in the current MDOT Materials Source Guide. All concrete anchors shall be installed according to the manufacturers recommendations and subject to the requirements of section J of the the current MDOT Standard Specifications for Construction except that all field testing must demonstrate the anchor can develop 70 percent of the minimum effective ultimate strength shown in the plans with less than 1/16 inch slip. Field testing up to 90 percent of the bolts yield strength is waived. Extreme caution shall be exercised when drilling holes for concrete anchors. Existing bridge plans shall be reviewed to determine the prestressing strand locations and to evaluate the risk of damaging prestressing strands associated with installing concrete anchors. 10. The bottom edge of the sign shall be horizontal when erected. 11. If replacing an existing sign support, unused holes in steel bridge beams shall be filled with a galvanized high strength bolt installed according to subsection D.7 of the current MDOT Standard Specifications for Construction. Existing holes in concrete shall not be reused and shall be filled with a non-shrink grout in accordance with section B of the the current MDOT Standard Specifications for Construction. 12. Sign support connection shall be installed on one bridge span of a bridge structure and shifted to avoid conflict with joints or stiffeners. 13. For connections on ASTM A 588 weathering steel bridges, the connection interface shall be blast cleaned and primed with organic zinc-rich paint in accordance with section 715 of the current MDOT Standard Specifications for Construction. If the existing bridge beam is unpainted ASTM A 588 weathering steel, the paint color shall be "brown weathering steel", federal code number and the paint shall overlap the perimeter of the connection by 2 inches, otherwise blend the paint to match existing paint color. the perimeter of the connections to the bridge beam web shall be sealed with an approved silicone sealant in accordance with subsection F of the current MDOT Standard Specifications for Construction. The bolted connections to the bridge beam web shall be according to subsection D.7 of the current MDOT Standard Specifications for Construction and shall utilize high strength bolts conforming to ASTM A 325 type Bridges built before 1978 contain lead based paint unless repainted after Inspection of proposed locations shall be performed to determine viability of connection to existing bridge. 11 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

12 NOTES (Continued): 16. These sign support connections shall be used with Type II or Type III signs. 17. subsection P of the the current MDOT Standard Specifications for Construction for bolt replacement in retained bridge mounted sign connections. 18. Removal of existing bridge sign connections shall be according to subsection T of the current MDOT Standard Specifications for Construction. 19. sections 712, 713 and 715 of the the current MDOT Standard Specifications for Construction for bridge sign connections to existing bridges. 20. Aluminum member designations are in accordance with the aluminum association aluminum design manual, 2000 edition. Aluminum channels are american standard series channels (C depth X weight). 21. All members are steel unless otherwise noted. 22. The design of this bridge sign connection is according to the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals, current Edition. 23. Type A1 denotes connections to concrete I-beam, steel I-beam bridges, bridge or barrier railing Type 4 or Type 5.Type A2 denotes connections to concrete T-beam bridges and connections to bridge barrier railing Type 4, Type 5 and aesthetic parapet tube railing. Type B denotes connections to steel. 24. For new bridges, surface rustication (texturing) at sign connections to railing shall be eliminated behind signs. For existing bridges, surface rustication (texturing) at sign connections to concrete shall be removed to a smooth surface. Care shall be taken to not remove excessive concrete below the depth of the texturing. 12 OF 12 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

A 2" MICHIGAN DEPARTMENT OF TRANSPORTATION. 1" (Min.) \ Bracket to \ bottom chord. 24-3" (Max.) 45 (Typ.) * W40 x 149. or l5 x 5 x 1/2 (see

$A 2 MICHIGAN DEPARTMENT OF TRANSPORTATION. 1 (Min.) \ Bracket to \ bottom chord. 24-3 (Max.) 45 (Typ.) * W40 x 149. or l5 x 5 x 1/2 (see$ For Information Only This Type of Support Has Varies To Be Analyzed For Each Case. 1/2 Detail A 2-6" (Max.) 3/8 5/8 " Stiffener \ Column 3/4 " Plate 7/16 7/16 24 - (Max.) to \ bottom chord * 1/4 1 1/ Plate