US Bridges

State Route 74 EB over Hillside

Good

Orange County, California · 12-ORA-074-14.97 · Structure no. 55 1090

Built
2010
15 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Concrete
Length
73 ft
1 main span
Daily traffic
9,800
2014 count
Owner
State
State Highway Agency

About this bridge

State Route 74 EB over Hillside is a concrete box beam or girders - single or spread carrying State Route 74 EB over Hillside in Orange County, California. It was built in 2010, so it is 15 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 9,800 vehicles a day, roughly 7% of them trucks, projected to reach 13,400 by 2040. The structure is 73 ft (22.2 m) long and 33 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

CarriesState Route 74 EB
CrossesHillside
Location12-ORA-074-14.97
RouteState Highway 74
Coordinates33.59252, -117.47666
Functional classUrban Minor Arterial

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 inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length73 ft (22.2 m)
Longest span73 ft (22.2 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,800 (2014)
Projected traffic13,400 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed61.5 mi (99 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 74 EB over Hillside built?

It was built in 2010, making it 15 years old in 2025.

What condition is State Route 74 EB over Hillside 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 August 2023.

How much traffic does State Route 74 EB over Hillside carry?

About 9,800 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is State Route 74 EB over Hillside?

The structure is 73 ft (22.2 m) long with a longest span of 73 ft (22.2 m) and a deck 33 ft wide.

Who owns State Route 74 EB over Hillside?

It is owned by the State Highway Agency.