LEGO Set

Road and Rail Maintenance

4546-1

Released: 1991 · Parts: 77 · Theme: 9V

Road and Rail Maintenance (4546-1) is a 9V LEGO set released in 1991 with 77 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing 9V sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 1 minifigure and 42 unique part types.

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Buying checklist

Quick context before you buy this set used or verify a marketplace listing.

Release year

1991 (35 years ago — may be retired)
Catalog scale

77 parts listed · 42 inventory lines tracked
Minifigures

1 in this set's inventory — verify completeness when buying used
Build manual

No digital manual in our catalog — check the box tab or LEGO.com
Gray era

Pre-2004 set — may use old light/dark gray instead of bluish gray
Shipping weight (est.)

~151 g for parts inventory (excludes box/minifig packaging)
Before you buy used

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Related sets in this theme

Road and Rail Repair

4525-1 · 1994 · 9V

85 parts

Small Locomotive

3740-1 · 2001 · 9V

66 parts

Large Locomotive (base unit without color trim elements)

3741-1 · 2001 · 9V

91 parts

Train Track Snow Remover

4533-1 · 1999 · 9V

58 parts

Locomotive Blue Bricks

3743-1 · 2001 · 9V

106 parts

Locomotive Green Bricks

3744-1 · 2001 · 9V

106 parts

Locomotive Black Bricks

3745-1 · 2001 · 9V

106 parts

Locomotive Brown Bricks

3746-1 · 2001 · 9V

106 parts

Market value

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