US Bridges

US HWY 50 (I-305) over Westacre RD

Poor

Yolo County, California · 03-YOL-050-2.18-WSAC · Structure no. 22 0102

Built
1951
74 years old, rebuilt 1966
Condition
Poor
inspected May 2023
Type
Slab
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
90,000
2015 count
Owner
State
State Highway Agency

About this bridge

US HWY 50 (I-305) over Westacre RD is a concrete continuous slab carrying US HWY 50 (I-305) over Westacre RD in Yolo County, California. It was built in 1951 and reconstructed in 1966, so it is 74 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 90,000 vehicles a day, roughly 11% of them trucks, projected to reach 149,000 by 2040. The structure is 105 ft (32 m) long and 153 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUS HWY 50 (I-305)
CrossesWestacre RD
Location03-YOL-050-2.18-WSAC
RouteInterstate 50
CountyYolo County
StateCalifornia
Coordinates38.57584, -121.53082
Functional classUrban Principal Arterial - Interstate

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length105 ft (32 m)
Longest span40 ft (12.2 m)
Deck width153 ft (46.5 m)
Roadway width149 ft (45.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90,000 (2015)
Projected traffic149,000 by 2040
Trucks11%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.6 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US HWY 50 (I-305) over Westacre RD built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1966.

What condition is US HWY 50 (I-305) over Westacre RD 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 May 2023.

How much traffic does US HWY 50 (I-305) over Westacre RD carry?

About 90,000 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is US HWY 50 (I-305) over Westacre RD?

The structure is 105 ft (32 m) long with a longest span of 40 ft (12.2 m) and a deck 153 ft wide.

Who owns US HWY 50 (I-305) over Westacre RD?

It is owned by the State Highway Agency.