Structure 54 1085 · San Bernardino County, CA

State Route 330 over Boulder Avenue

Carries State Route 330 over Boulder Avenue, 08-sbd-330-r29.28-high.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT163 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

163 ft end to end, longest span 88 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built199333 years old
Length163.1 ft49.7 m
Daily traffic12,000counted 2022
Last inspectedDecember 2024every 48 months

Location

StateCalifornia
CountySan Bernardino
Location08-sbd-330-r29.28-high
CarriesState Route 330
CrossesBoulder Avenue
Coordinates34.13257, -117.19579

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length163.1 ft (49.7 m)
Max Span87.9 ft (26.8 m)
Deck Width93.5 ft (28.5 m)
Deck Area1416.5 sq m
Main Spans2
Year Built1993

Traffic

Avg Daily Traffic12,000 (2022)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge5

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number54 1085

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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