US Bridges

State Route 330 over Boulder Avenue

Good

San Bernardino County, California · 08-SBD-330-R29.28-HIGH · Structure no. 54 1085

Built
1993
32 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
163 ft
2 main spans
Daily traffic
12,000
2022 count
Owner
State
State Highway Agency

About this bridge

State Route 330 over Boulder Avenue is a prestressed concrete continuous box beam or girders - multiple carrying State Route 330 over Boulder Avenue in San Bernardino County, California. It was built in 1993, so it is 32 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,000 vehicles a day, roughly 4% of them trucks, projected to reach 15,000 by 2042. The structure is 163 ft (49.7 m) long and 94 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesState Route 330
CrossesBoulder Avenue
Location08-SBD-330-R29.28-HIGH
RouteState Highway 330
Coordinates34.13257, -117.19579
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length163 ft (49.7 m)
Longest span88 ft (26.8 m)
Deck width94 ft (28.5 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2022)
Projected traffic15,000 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 330 over Boulder Avenue built?

It was built in 1993, making it 32 years old in 2025.

What condition is State Route 330 over Boulder Avenue in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does State Route 330 over Boulder Avenue carry?

About 12,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is State Route 330 over Boulder Avenue?

The structure is 163 ft (49.7 m) long with a longest span of 88 ft (26.8 m) and a deck 94 ft wide.

Who owns State Route 330 over Boulder Avenue?

It is owned by the State Highway Agency.