US Bridges

Sylvan Road over San Juan Creek

Good

Sacramento County, California · 0.4 MI N Greenback Lane · Structure no. 24C0410

Built
1967
58 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
27,244
2009 count
Owner
County
County Highway Agency

About this bridge

Sylvan Road over San Juan Creek is a concrete continuous culvert carrying Sylvan Road over San Juan Creek in Sacramento County, California. It was built in 1967, so it is 58 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 27,244 vehicles a day, roughly 1% of them trucks, projected to reach 45,040 by 2045. The structure is 23 ft (7 m) long and 94 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSylvan Road
CrossesSan Juan Creek
Location0.4 MI N Greenback Lane
RouteCounty Highway 0
Coordinates38.68414, -121.29018
Functional classUrban Other Principal Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width94 ft (28.6 m)
Roadway width58 ft (17.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,244 (2009)
Projected traffic45,040 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Sylvan Road over San Juan Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Sylvan Road over San Juan Creek 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 March 2023.

How much traffic does Sylvan Road over San Juan Creek carry?

About 27,244 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Sylvan Road over San Juan Creek?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 94 ft wide.

Who owns Sylvan Road over San Juan Creek?

It is owned by the County Highway Agency.