---
kind: "section"
citation: "33 C.F.R. § 401.52"
title: "33"
number: "401.52"
heading: "Limit of approach to a bridge."
url: "https://uscodex.org/cfr/33/401.52"
---

# §401.52. Limit of approach to a bridge.

- (a) No vessel shall pass the limit of approach sign at any movable bridge until the bridge is in a fully open position and the signal light shows green.
- (b) No vessel shall pass the limit of approach sign at the twin railway bridges on the South Shore Canal at Kahnawake, until both bridges are in a fully open position and both signal lights show green.

## Notes

### Amendments

[39 FR 10900, Mar. 22, 1974, as amended at 61 FR 19551, May 2, 1996; 65 FR 52914, Aug. 31, 2000; 79 FR 12660, Mar. 6, 2014]

### Authority

Authority: 33 U.S.C. 983(a) and 984(a)(4), as amended; 49 CFR 1.101, unless otherwise noted.

### Source

Source: 39 FR 10900, Mar. 22, 1974, unless otherwise noted.

### Amendments

[39 FR 10900, Mar. 22, 1974, as amended at 61 FR 19551, May 2, 1996; 65 FR 52914, Aug. 31, 2000; 79 FR 12660, Mar. 6, 2014]