US Bridges

Whittram Avenue over San Sevaine Channel

Good

San Bernardino County, California · 0.5 M. E/O Etiwanda Ave · Structure no. 54C0790

Built
1988
37 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
7,200
2020 count
Owner
County
County Highway Agency

About this bridge

Whittram Avenue over San Sevaine Channel is a concrete continuous culvert carrying Whittram Avenue over San Sevaine Channel in San Bernardino County, California. It was built in 1988, so it is 37 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 7,200 vehicles a day, roughly 4% of them trucks, projected to reach 10,000 by 2045. The structure is 46 ft (14 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWhittram Avenue
CrossesSan Sevaine Channel
Location0.5 M. E/O Etiwanda Ave
RouteCounty Highway 0
Coordinates34.09444, -117.51486
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length46 ft (14 m)
Longest span14 ft (4.3 m)
Deck width88 ft (26.8 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2020)
Projected traffic10,000 by 2045
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Whittram Avenue over San Sevaine Channel built?

It was built in 1988, making it 37 years old in 2025.

What condition is Whittram Avenue over San Sevaine Channel 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 June 2024.

How much traffic does Whittram Avenue over San Sevaine Channel carry?

About 7,200 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Whittram Avenue over San Sevaine Channel?

The structure is 46 ft (14 m) long with a longest span of 14 ft (4.3 m) and a deck 88 ft wide.

Who owns Whittram Avenue over San Sevaine Channel?

It is owned by the County Highway Agency.