US Bridges

47th Ave over State Route 99

Fair

Sacramento County, California · 03-SAC-099-20.86 · Structure no. 24 0152

Built
1959
66 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
254 ft
4 main spans
Daily traffic
36,380
2019 count
Owner
State
State Highway Agency

About this bridge

47th Ave over State Route 99 is a concrete continuous box beam or girders - multiple carrying 47th Ave over State Route 99 in Sacramento County, California. It was built in 1959, so it is 66 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 6 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 36,380 vehicles a day, roughly 2% of them trucks, projected to reach 56,865 by 2042. The structure is 254 ft (77.3 m) long and 70 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries47th Ave
CrossesState Route 99
Location03-SAC-099-20.86
RouteCounty Highway 0
CountySacramento County
StateCalifornia
Coordinates38.51038, -121.46039
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating34 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length254 ft (77.3 m)
Longest span91 ft (27.8 m)
Deck width70 ft (21.4 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,380 (2019)
Projected traffic56,865 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

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 47th Ave over State Route 99 built?

It was built in 1959, making it 66 years old in 2025.

What condition is 47th Ave over State Route 99 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 February 2024.

How much traffic does 47th Ave over State Route 99 carry?

About 36,380 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is 47th Ave over State Route 99?

The structure is 254 ft (77.3 m) long with a longest span of 91 ft (27.8 m) and a deck 70 ft wide.

Who owns 47th Ave over State Route 99?

It is owned by the State Highway Agency.