US Bridges

State Route 98 over Westside Main Canal

Poor

Imperial County, California · 11-IMP-098-22.02 · Structure no. 58 0274

Built
1955
70 years old
Condition
Poor
inspected December 2023
Type
Tee Beam
Concrete Continuous
Length
151 ft
3 main spans
Daily traffic
2,100
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 98 over Westside Main Canal is a concrete continuous tee beam carrying State Route 98 over Westside Main Canal in Imperial County, California. It was built in 1955, so it is 70 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,100 vehicles a day, roughly 11% of them trucks, projected to reach 3,153 by 2045. The structure is 151 ft (46 m) long and 33 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

Location

Open in Google Maps
CarriesState Route 98
CrossesWestside Main Canal
Location11-IMP-098-22.02
RouteState Highway 98
CountyImperial County
StateCalifornia
Coordinates32.67843, -115.67406
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating30.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length151 ft (46 m)
Longest span58 ft (17.7 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2019)
Projected traffic3,153 by 2045
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.2 mi (76 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 98 over Westside Main Canal built?

It was built in 1955, making it 70 years old in 2025.

What condition is State Route 98 over Westside Main Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does State Route 98 over Westside Main Canal carry?

About 2,100 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is State Route 98 over Westside Main Canal?

The structure is 151 ft (46 m) long with a longest span of 58 ft (17.7 m) and a deck 33 ft wide.

Who owns State Route 98 over Westside Main Canal?

It is owned by the State Highway Agency.