US Bridges

Walnut Ave over San Antonio Creek Chan

Fair

San Bernardino County, California · 0.2 MI E Reservoir ST · Structure no. 54C0137

Built
1970
55 years old
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
4,220
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Walnut Ave over San Antonio Creek Chan is a prestressed concrete slab carrying Walnut Ave over San Antonio Creek Chan in San Bernardino County, California. It was built in 1970, so it is 55 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 4,220 vehicles a day, roughly 1% of them trucks, projected to reach 8,875 by 2042. The structure is 48 ft (14.6 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWalnut Ave
CrossesSan Antonio Creek Chan
Location0.2 MI E Reservoir ST
RouteCity Street 0
Coordinates34.02448, -117.72824
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
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 protection9 ExcellentNo problems noted.
Last inspectionJune 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span46 ft (14 m)
Deck width56 ft (17 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,220 (2016)
Projected traffic8,875 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Walnut Ave over San Antonio Creek Chan built?

It was built in 1970, making it 55 years old in 2025.

What condition is Walnut Ave over San Antonio Creek Chan 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 2024.

How much traffic does Walnut Ave over San Antonio Creek Chan carry?

About 4,220 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Walnut Ave over San Antonio Creek Chan?

The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 56 ft wide.

Who owns Walnut Ave over San Antonio Creek Chan?

It is owned by the City or Municipal Highway Agency.