US Bridges

Lytle Creek Road over Grapevine Canyon

Fair

San Bernardino County, California · 1.3 MI N RTE I 15 · Structure no. 54C0216

Built
1980
45 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
2,559
2015 count
Owner
County
County Highway Agency

About this bridge

Lytle Creek Road over Grapevine Canyon is a concrete culvert carrying Lytle Creek Road over Grapevine Canyon in San Bernardino County, California. It was built in 1980, so it is 45 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 2,559 vehicles a day, roughly 1% of them trucks, projected to reach 3,218 by 2045. The structure is 23 ft (7 m) long and 52 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesLytle Creek Road
CrossesGrapevine Canyon
Location1.3 MI N RTE I 15
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.19823, -117.44537
Functional classRural Major 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width52 ft (15.8 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,559 (2015)
Projected traffic3,218 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lytle Creek Road over Grapevine Canyon built?

It was built in 1980, making it 45 years old in 2025.

What condition is Lytle Creek Road over Grapevine Canyon 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 June 2023.

How much traffic does Lytle Creek Road over Grapevine Canyon carry?

About 2,559 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Lytle Creek Road over Grapevine Canyon?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 52 ft wide.

Who owns Lytle Creek Road over Grapevine Canyon?

It is owned by the County Highway Agency.