US Bridges

Nat Trails HWY over Dagget Ditch

Fair

San Bernardino County, California · 0.50 MI E Dagget Yermo RD · Structure no. 54C0116

Built
1929
96 years old, rebuilt 1946
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
2 main spans
Daily traffic
1,052
2015 count
Owner
County
County Highway Agency

About this bridge

Nat Trails HWY over Dagget Ditch is a wood or timber stringer/multi-beam or girder carrying Nat Trails HWY over Dagget Ditch in San Bernardino County, California. It was built in 1929 and reconstructed in 1946, so it is 96 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 1,052 vehicles a day, roughly 5% of them trucks, projected to reach 1,002 by 2045. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesNat Trails HWY
CrossesDagget Ditch
Location0.50 MI E Dagget Yermo RD
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.86134, -116.88006
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionNovember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,052 (2015)
Projected traffic1,002 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nat Trails HWY over Dagget Ditch built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1946.

What condition is Nat Trails HWY over Dagget 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 November 2024.

How much traffic does Nat Trails HWY over Dagget Ditch carry?

About 1,052 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Nat Trails HWY over Dagget Ditch?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Nat Trails HWY over Dagget Ditch?

It is owned by the County Highway Agency.