US Bridges

Nevada ST over Mission Zanja

Good

San Bernardino County, California · 0.5 MI N Barton RD · Structure no. 54C0428

Built
1963
62 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
5,300
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nevada ST over Mission Zanja is a concrete culvert carrying Nevada ST over Mission Zanja in San Bernardino County, California. It was built in 1963, so it is 62 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,300 vehicles a day, roughly 5% of them trucks, projected to reach 18,181 by 2045. The structure is 32 ft (9.8 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNevada ST
CrossesMission Zanja
Location0.5 MI N Barton RD
RouteCity Street 0
Coordinates34.0558, -117.21736
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span15 ft (4.6 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2017)
Projected traffic18,181 by 2045
Trucks5%
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 Nevada ST over Mission Zanja built?

It was built in 1963, making it 62 years old in 2025.

What condition is Nevada ST over Mission Zanja in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Nevada ST over Mission Zanja carry?

About 5,300 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Nevada ST over Mission Zanja?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m) and a deck 46 ft wide.

Who owns Nevada ST over Mission Zanja?

It is owned by the City or Municipal Highway Agency.