US Bridges

State Route 36 over Ditch Gulch

Good

Trinity County, California · 02-TRI-036-R27.00 · Structure no. 05 0093

Built
2022
3 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
383 ft
4 main spans
Daily traffic
300
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 36 over Ditch Gulch is a concrete continuous box beam or girders - multiple carrying State Route 36 over Ditch Gulch in Trinity 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 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 300 vehicles a day, roughly 11% of them trucks, projected to reach 433 by 2040. The structure is 383 ft (116.7 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesState Route 36
CrossesDitch Gulch
Location02-TRI-036-R27.00
RouteState Highway 36
CountyTrinity County
StateCalifornia
Coordinates40.41812, -123.18005
Functional classRural 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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length383 ft (116.7 m)
Longest span124 ft (37.8 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2009)
Projected traffic433 by 2040
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 36 over Ditch Gulch built?

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

What condition is State Route 36 over Ditch Gulch 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 March 2023.

How much traffic does State Route 36 over Ditch Gulch carry?

About 300 vehicles per day (2009 count), of which roughly 11% are trucks.

How long is State Route 36 over Ditch Gulch?

The structure is 383 ft (116.7 m) long with a longest span of 124 ft (37.8 m) and a deck 36 ft wide.

Who owns State Route 36 over Ditch Gulch?

It is owned by the State Highway Agency.