US Bridges

Evan Hewes HWY over Rimbo Ditch

Fair

Imperial County, California · 5.8 MI E/O Imperial HWY · Structure no. 58C0056

Built
1932
93 years old, rebuilt 1949
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
2 main spans
Daily traffic
372
2020 count
Owner
County
County Highway Agency

About this bridge

Evan Hewes HWY over Rimbo Ditch is a wood or timber stringer/multi-beam or girder carrying Evan Hewes HWY over Rimbo Ditch in Imperial County, California. It was built in 1932 and reconstructed in 1949, so it is 93 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 372 vehicles a day, roughly 10% of them trucks, projected to reach 1,137 by 2042. The structure is 40 ft (12.2 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesEvan Hewes HWY
CrossesRimbo Ditch
Location5.8 MI E/O Imperial HWY
RouteCounty Highway 0
CountyImperial County
StateCalifornia
Coordinates32.77472, -115.90859
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic372 (2020)
Projected traffic1,137 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Evan Hewes HWY over Rimbo Ditch built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1949.

What condition is Evan Hewes HWY over Rimbo Ditch 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 2024.

How much traffic does Evan Hewes HWY over Rimbo Ditch carry?

About 372 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Evan Hewes HWY over Rimbo Ditch?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns Evan Hewes HWY over Rimbo Ditch?

It is owned by the County Highway Agency.