State Route 18 over Bonnie Canyon

Good Condition56 years old16,800 vehicles/day

Location

StateCalifornia
CountySan Bernardino
Location08-sbd-018-r16.54
CarriesState Route 18
CrossesBonnie Canyon
Coordinates34.23001, -117.30099

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length231.6 ft (70.6 m)
Max Span107.6 ft (32.8 m)
Deck Width62.7 ft (19.1 m)
Deck Area1348.5 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic16,800 (2017)
Truck Traffic10%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number54 0876

Nearby Bridges

State Route 18 over Hillside 0.1 mi Good State Route 18 over Hillside 0.1 mi Good State Route 18 over Hillside 0.2 mi Good State Route 18 over Hillside 0.3 mi Good State Route 18 over Lower Bonnie Canyon 0.3 mi Fair State Route 18 over Hillside 0.5 mi Good E138-18 & N18-w138 over State Highway 18 0.6 mi Good State Route 18 over E138-s18 Connector Ramp 0.7 mi Good State Route 18 over Hillside 0.7 mi Fair State Route 18 over Waterman Canyon RD 1.0 mi Good