US Bridges

Watt Ave SB over State Route 51 & Ramp

Good

Sacramento County, California · 03-SAC-051-7.97-SAC · Structure no. 24 0125R

Built
1954
71 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
180 ft
2 main spans
Daily traffic
100,000
2013 count
Owner
State
State Highway Agency

About this bridge

Watt Ave SB over State Route 51 & Ramp is a concrete continuous box beam or girders - multiple carrying Watt Ave SB over State Route 51 & Ramp in Sacramento County, California. It was built in 1954, so it is 71 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 100,000 vehicles a day, roughly 10% of them trucks, projected to reach 172,727 by 2041. The structure is 180 ft (54.9 m) long and 59 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesWatt Ave SB
CrossesState Route 51 & Ramp
Location03-SAC-051-7.97-SAC
RouteCity Street 0
Coordinates38.63997, -121.38339
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating43.2 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span93 ft (28.3 m)
Deck width59 ft (18 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100,000 (2013)
Projected traffic172,727 by 2041
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 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 Watt Ave SB over State Route 51 & Ramp built?

It was built in 1954, making it 71 years old in 2025.

What condition is Watt Ave SB over State Route 51 & Ramp 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 November 2023.

How much traffic does Watt Ave SB over State Route 51 & Ramp carry?

About 100,000 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Watt Ave SB over State Route 51 & Ramp?

The structure is 180 ft (54.9 m) long with a longest span of 93 ft (28.3 m) and a deck 59 ft wide.

Who owns Watt Ave SB over State Route 51 & Ramp?

It is owned by the State Highway Agency.