US Bridges

Route 74 over San Jacinto River

Fair

Riverside County, California · 08-RIV-074-49.16 · Structure no. 56 0178

Built
1929
96 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
159 ft
3 main spans
Daily traffic
3,774
2016 count
Owner
State
State Highway Agency

About this bridge

Route 74 over San Jacinto River is a concrete tee beam carrying Route 74 over San Jacinto River in Riverside County, California. It was built in 1929, so it is 96 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,774 vehicles a day, roughly 7% of them trucks, projected to reach 10,687 by 2042. The structure is 159 ft (48.5 m) long and 25 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesRoute 74
CrossesSan Jacinto River
Location08-RIV-074-49.16
RouteState Highway 74
CountyRiverside County
StateCalifornia
Coordinates33.73683, -116.82664
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length159 ft (48.5 m)
Longest span53 ft (16.2 m)
Deck width25 ft (7.6 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,774 (2016)
Projected traffic10,687 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 74 over San Jacinto River built?

It was built in 1929, making it 96 years old in 2025.

What condition is Route 74 over San Jacinto River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Route 74 over San Jacinto River carry?

About 3,774 vehicles per day (2016 count), of which roughly 7% are trucks.

How long is Route 74 over San Jacinto River?

The structure is 159 ft (48.5 m) long with a longest span of 53 ft (16.2 m) and a deck 25 ft wide.

Who owns Route 74 over San Jacinto River?

It is owned by the State Highway Agency.