US Bridges

N99-AVE 12 Offramp over Cottonwood Creek

Fair

Madera County, California · 06-MAD-099-R7.28 · Structure no. 41 0065S

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
271 ft
8 main spans
Daily traffic
1,650
2010 count
Owner
State
State Highway Agency

About this bridge

N99-AVE 12 Offramp over Cottonwood Creek is a concrete continuous tee beam carrying N99-AVE 12 Offramp over Cottonwood Creek in Madera 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 1,650 vehicles a day, roughly 10% of them trucks, projected to reach 3,446 by 2041. The structure is 271 ft (82.6 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN99-AVE 12 Offramp
CrossesCottonwood Creek
Location06-MAD-099-R7.28
RouteState Highway 99
Coordinates36.92213, -120.01957
Functional classRural Principal Arterial - Other

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length271 ft (82.6 m)
Longest span36 ft (11 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,650 (2010)
Projected traffic3,446 by 2041
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 N99-AVE 12 Offramp over Cottonwood Creek built?

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

What condition is N99-AVE 12 Offramp over Cottonwood Creek 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 June 2023.

How much traffic does N99-AVE 12 Offramp over Cottonwood Creek carry?

About 1,650 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is N99-AVE 12 Offramp over Cottonwood Creek?

The structure is 271 ft (82.6 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns N99-AVE 12 Offramp over Cottonwood Creek?

It is owned by the State Highway Agency.