US Bridges

N99-N51 Connector over US 50 & Connectors

Fair

Sacramento County, California · 03-SAC-099-R24.27-SAC · Structure no. 24 0231R

Built
1967
58 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
924 ft
9 main spans
Daily traffic
96,500
2019 count
Owner
State
State Highway Agency

About this bridge

N99-N51 Connector over US 50 & Connectors is a concrete continuous box beam or girders - multiple carrying N99-N51 Connector over US 50 & Connectors 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 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 96,500 vehicles a day, roughly 5% of them trucks, projected to reach 160,260 by 2042. The structure is 924 ft (281.7 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN99-N51 Connector
CrossesUS 50 & Connectors
Location03-SAC-099-R24.27-SAC
RouteState Highway 99
CountySacramento County
StateCalifornia
Coordinates38.55775, -121.47376
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length924 ft (281.7 m)
Longest span117 ft (35.6 m)
Deck width68 ft (20.7 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96,500 (2019)
Projected traffic160,260 by 2042
Trucks5%
Lanes on structure4
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 N99-N51 Connector over US 50 & Connectors built?

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

What condition is N99-N51 Connector over US 50 & Connectors 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 N99-N51 Connector over US 50 & Connectors carry?

About 96,500 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is N99-N51 Connector over US 50 & Connectors?

The structure is 924 ft (281.7 m) long with a longest span of 117 ft (35.6 m) and a deck 68 ft wide.

Who owns N99-N51 Connector over US 50 & Connectors?

It is owned by the State Highway Agency.