US Bridges

N99-W152 Connector over SR 99 SB

Good

Madera County, California · 06-MAD-099-22.73 · Structure no. 41 0043G

Built
1957
68 years old, rebuilt 2001
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
115 ft
1 main span
Daily traffic
13,000
2009 count
Owner
State
State Highway Agency

About this bridge

N99-W152 Connector over SR 99 SB is a concrete box beam or girders - multiple carrying N99-W152 Connector over SR 99 SB in Madera County, California. It was built in 1957 and reconstructed in 2001, so it is 68 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 13,000 vehicles a day, roughly 25% of them trucks, projected to reach 21,587 by 2041. The structure is 115 ft (35 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesN99-W152 Connector
CrossesSR 99 SB
Location06-MAD-099-22.73
RouteState Highway 99
CountyMadera County
StateCalifornia
Coordinates37.08441, -120.21005
Functional classRural Principal Arterial - Other

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.8 US tons
Inventory rating40.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length115 ft (35 m)
Longest span115 ft (35 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2009)
Projected traffic21,587 by 2041
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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-W152 Connector over SR 99 SB built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2001.

What condition is N99-W152 Connector over SR 99 SB 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 2024.

How much traffic does N99-W152 Connector over SR 99 SB carry?

About 13,000 vehicles per day (2009 count), of which roughly 25% are trucks.

How long is N99-W152 Connector over SR 99 SB?

The structure is 115 ft (35 m) long with a longest span of 115 ft (35 m) and a deck 42 ft wide.

Who owns N99-W152 Connector over SR 99 SB?

It is owned by the State Highway Agency.