US Bridges

S51-J ST Offramp over H ST H ST-S51 On-Ramp

Fair

Sacramento County, California · 03-SAC-051-1.15-SAC · Structure no. 24 0189K

Built
1966
59 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
411 ft
4 main spans
Daily traffic
15,000
2010 count
Owner
State
State Highway Agency

About this bridge

S51-J ST Offramp over H ST H ST-S51 On-Ramp is a concrete continuous box beam or girders - multiple carrying S51-J ST Offramp over H ST H ST-S51 On-Ramp in Sacramento County, California. It was built in 1966, so it is 59 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 15,000 vehicles a day, roughly 2% of them trucks, projected to reach 22,577 by 2045. The structure is 411 ft (125.3 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS51-J ST Offramp
CrossesH ST H ST-S51 On-Ramp
Location03-SAC-051-1.15-SAC
RouteState Highway 51
CountySacramento County
StateCalifornia
Coordinates38.57472, -121.46709
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length411 ft (125.3 m)
Longest span112 ft (34 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2010)
Projected traffic22,577 by 2045
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S51-J ST Offramp over H ST H ST-S51 On-Ramp built?

It was built in 1966, making it 59 years old in 2025.

What condition is S51-J ST Offramp over H ST H ST-S51 On-Ramp 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 November 2023.

How much traffic does S51-J ST Offramp over H ST H ST-S51 On-Ramp carry?

About 15,000 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is S51-J ST Offramp over H ST H ST-S51 On-Ramp?

The structure is 411 ft (125.3 m) long with a longest span of 112 ft (34 m) and a deck 34 ft wide.

Who owns S51-J ST Offramp over H ST H ST-S51 On-Ramp?

It is owned by the State Highway Agency.