US Bridges

Glen Helen Pkwy over Cajon Wash

Fair

San Bernardino County, California · .6 MI S of Route I-215 · Structure no. 54C0025

Built
1993
32 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete
Length
47 ft
1 main span
Daily traffic
1,173
2015 count
Owner
County
County Highway Agency

About this bridge

Glen Helen Pkwy over Cajon Wash is a concrete slab carrying Glen Helen Pkwy over Cajon Wash in San Bernardino County, California. It was built in 1993, so it is 32 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 1,173 vehicles a day, roughly 1% of them trucks, projected to reach 2,738 by 2044. The structure is 47 ft (14.3 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGlen Helen Pkwy
CrossesCajon Wash
Location.6 MI S of Route I-215
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.2142, -117.40351
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length47 ft (14.3 m)
Longest span44 ft (13.4 m)
Deck width40 ft (12.2 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,173 (2015)
Projected traffic2,738 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Glen Helen Pkwy over Cajon Wash built?

It was built in 1993, making it 32 years old in 2025.

What condition is Glen Helen Pkwy over Cajon Wash 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 July 2023.

How much traffic does Glen Helen Pkwy over Cajon Wash carry?

About 1,173 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Glen Helen Pkwy over Cajon Wash?

The structure is 47 ft (14.3 m) long with a longest span of 44 ft (13.4 m) and a deck 40 ft wide.

Who owns Glen Helen Pkwy over Cajon Wash?

It is owned by the County Highway Agency.