US Bridges

State Route 78 EB over New River

Fair

Imperial County, California · 11-IMP-078-R12.48 · Structure no. 58 0337R

Built
2012
13 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
306 ft
3 main spans
Daily traffic
6,100
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 78 EB over New River is a prestressed concrete stringer/multi-beam or girder carrying State Route 78 EB over New River in Imperial County, California. It was built in 2012, so it is 13 years old, younger 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 6 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 6,100 vehicles a day, roughly 5% of them trucks, projected to reach 18,200 by 2046. The structure is 306 ft (93.2 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Route 78 EB
CrossesNew River
Location11-IMP-078-R12.48
RouteState Highway 78
Coordinates33.00196, -115.5328
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length306 ft (93.2 m)
Longest span115 ft (35.1 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2019)
Projected traffic18,200 by 2046
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 78 EB over New River built?

It was built in 2012, making it 13 years old in 2025.

What condition is State Route 78 EB over New 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 January 2025.

How much traffic does State Route 78 EB over New River carry?

About 6,100 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is State Route 78 EB over New River?

The structure is 306 ft (93.2 m) long with a longest span of 115 ft (35.1 m) and a deck 41 ft wide.

Who owns State Route 78 EB over New River?

It is owned by the State Highway Agency.