US Bridges

State Route 99 NB over Owens Creek

Good

Merced County, California · 10-MER-099-10.55 · Structure no. 39 0006R

Built
2008
17 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
85 ft
2 main spans
Daily traffic
19,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 99 NB over Owens Creek is a concrete continuous slab carrying State Route 99 NB over Owens Creek in Merced County, California. It was built in 2008, so it is 17 years old, younger 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 19,500 vehicles a day, projected to reach 28,645 by 2042. The structure is 85 ft (26 m) long and 58 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesState Route 99 NB
CrossesOwens Creek
Location10-MER-099-10.55
RouteState Highway 99
Coordinates37.26194, -120.42406
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length85 ft (26 m)
Longest span43 ft (13 m)
Deck width58 ft (17.7 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2009)
Projected traffic28,645 by 2042
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 99 NB over Owens Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is State Route 99 NB over Owens Creek 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 April 2024.

How much traffic does State Route 99 NB over Owens Creek carry?

About 19,500 vehicles per day (2009 count).

How long is State Route 99 NB over Owens Creek?

The structure is 85 ft (26 m) long with a longest span of 43 ft (13 m) and a deck 58 ft wide.

Who owns State Route 99 NB over Owens Creek?

It is owned by the State Highway Agency.