Almost as if planned, JzB lauded puzzles which use different definitions for the same word on Wednesday. So BOOM, C.C. and Husker \Gary are here with a classic example of that type of puzzle. Actually there are many other meanings for bridge - part of a musical composition - part of a guitar - and the above referenced nose. This team picked two grid spanners and two 13s to pack in the theme. All four definitions are fair and took time to come up with the symmetrical fill. THey managed some fun fill like INGEST, GO FAST, G-SUITS, TOSTADA, THE WIRE, I GOTTA RUN and DUDE RANCH
17A. Bridge : CARD GAME FOR FOUR (15).
23A. Bridge : HELMSMAN'S POST (13).
52A. Bridge : RIVER CROSSING (13)
62A. Bridge : DENTAL APPLIANCE (15).
Across
1. Carnival Cruise Line headquarters : MIAMI. The ultimate gimme for me; I live in South Florida and I have been to their offices having owned a travel agency.
6. Net gain? : GOAL. Punny!
10. One often taking a bow : GIFT. Yes, this time it is BOW (o) not BOW (ow).
14. How many crosswords are solved : IN PEN.
15. Plot to plow : ACRE. nice!
16. Creepy look : OGLE.
20. Young Skywalker's nickname : ANI.
21. "At Wit's End" columnist Bombeck : ERMA.
22. Like Cheerios : OATEN. Entering the food zone.
27. Liked a lot, with "up" : ATE.
28. Taqueria order : TOSTADA.
31. A3 or Q7 : AUDI.
34. Leave : DEPART.
37. Whistle-blower : REF.
38. Way around the block? : SHUNT.
40. Luau band : LEI.
41. Meatball medium : SAUCE.
43. Roll in the yard : SOD.
44. Inn crowd option : RAMADA.
47. Cause of some closings : SNOW.
48. HBO drama set in Baltimore : THE WIRE.
50. __ Friday's : TGI.
.
58. Sultan Qaboos Grand Mosque prayer : OMANI.
60. Sci-fi navigator : SULU.
61. Gen __ : XER.
66. Number of times a horse can enter the Kentucky Derby : ONCE.
67. "Dies __" : IRAE.
68. Copy, in a way : TRACE.
69. Essen's region : RUHR.
70. Celebrate an anniversary, say, with "out" : DINE.
71. Secretly watch : SPY ON.
Down:
1. Hebrew prophet : MICAH.
2. Absurd : INANE.
3. __ fool : APRIL.
4. Club __ : MED.
5. Take in : INGEST.
6. Harmful ray type : GAMMA. Just ask Bruce Banner!
7. More than 70% of Earth's surface : OCEAN.
8. Lab greeting : ARF.
9. "Ars gratia artis" is written in an arc around his head : LEO. MGM Lion.
10. Zoom along : GO FAST.
11. "Time for me to split" : I GOTTA RUN.\
12. Smoke passage : FLUE.
13. Gull relative : TERN.
18. Carrying, so to speak : ARMED.
19. Hen holders : ROOSTS.
24. Common street name : MAIN.
25. Strait-laced : STAID.
26. __ ejemplo : POR. For example...not too hard
29. Geometric art style : DECO. Art is always fun. LINK.
30. Several : A FEW.
31. Start of a subordinate title: Abbr. : ASST.
32. "You meant 8 p.m. not a.m.?" : UH OH.
33. Vacation spot with horseback riding : DUDE RANCH.
35. Toon often seen in a hunting hat : ELMER.
36. Shelled veggie : PEA.
39. "Jeopardy!" staple : TRIVIA.
42. Flaws and all : AS IS. M
45. Is for everyone? : ARE. Really cute clue.
46. Bikini in the Pacific, e.g. : ATOLL. Well used by the military.
49. It starts a bit before Christmas : WINTER. 4 days, C.E.
51. Astronauts' gear : G-SUITS. From our resident astronaut we have an anti-gravity garment worn by fighter pilots. When they are pulling positive G's, the suit inflates and prevents blood from pooling in their feet and legs which would cause them to lose consciousness. NASA astronauts also wear g-suits when they experience Orthostatic Intolerance. LINK
53. Channel with a "Congressional Chronicle" online archive : C-SPAN.
54. Kolkata cash : RUPEE. No more Calcutta.
55. Slangy refusal : IXNAY. Pig latin...
56. Wafer brand : NECCO. HG? Those of us of an age...
57. Place to find a flag : GREEN. Another HG moment with a golf course clue.
58. Le Pew's defense : ODOR. Pepe.
https://www.youtube.com/watch?v=OP7k4LXM1rE
59. Dish list : MENU.
63. Limit : LID. Put a lid on it!?!
64. Jackie O's second : ARI. Aristot;e Onassis.
65. "Shirt Front and Fork" artist : ARP. Jean Arp or Hans Arp (16 September 1886 – 7 June 1966) was a German-French sculptor, painter, poet, and abstract artist in other media such as torn and pasted paper. When Arp spoke in German he referred to himself as "Hans", and when he spoke in French he referred to himself as "Jean".