US Bridges

Mariposa Ave over 29 Palms Fl Cont Channel

Fair

San Bernardino County, California · 100 N Route FAP 62 · Structure no. 54C0491

Built
1969
56 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
49 ft
3 main spans
Daily traffic
714
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mariposa Ave over 29 Palms Fl Cont Channel is a concrete culvert carrying Mariposa Ave over 29 Palms Fl Cont Channel in San Bernardino County, California. It was built in 1969, so it is 56 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 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 714 vehicles a day, roughly 2% of them trucks, projected to reach 858 by 2041. The structure is 49 ft (14.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMariposa Ave
Crosses29 Palms Fl Cont Channel
Location100 N Route FAP 62
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.13594, -116.09034
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span15 ft (4.6 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic714 (2016)
Projected traffic858 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mariposa Ave over 29 Palms Fl Cont Channel built?

It was built in 1969, making it 56 years old in 2025.

What condition is Mariposa Ave over 29 Palms Fl Cont Channel 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 Mariposa Ave over 29 Palms Fl Cont Channel carry?

About 714 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Mariposa Ave over 29 Palms Fl Cont Channel?

The structure is 49 ft (14.9 m) long with a longest span of 15 ft (4.6 m) and a deck 34 ft wide.

Who owns Mariposa Ave over 29 Palms Fl Cont Channel?

It is owned by the City or Municipal Highway Agency.