US Bridges

Lack Road over New River

Fair

Imperial County, California · 4.34 MI N/O SR-78/86 · Structure no. 58C0224

Built
2022
3 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
590
2023 count
Owner
County
County Highway Agency

About this bridge

Lack Road over New River is a prestressed concrete stringer/multi-beam or girder carrying Lack Road over New River in Imperial County, California. It was built in 2022, so it is 3 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 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 590 vehicles a day, roughly 2% of them trucks, projected to reach 700 by 2045. The structure is 125 ft (38.1 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLack Road
CrossesNew River
Location4.34 MI N/O SR-78/86
RouteCounty Highway 0
CountyImperial County
StateCalifornia
Coordinates33.09968, -115.64883
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length125 ft (38.1 m)
Longest span120 ft (36.6 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic590 (2023)
Projected traffic700 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Lack Road over New River built?

It was built in 2022, making it 3 years old in 2025.

What condition is Lack Road 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 December 2023.

How much traffic does Lack Road over New River carry?

About 590 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Lack Road over New River?

The structure is 125 ft (38.1 m) long with a longest span of 120 ft (36.6 m) and a deck 35 ft wide.

Who owns Lack Road over New River?

It is owned by the County Highway Agency.