US Bridges

SR 233 (avenue 26) over State Route 99

Good

Madera County, California · 06-MAD-233-3.87 · Structure no. 41 0055E

Built
1957
68 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
148 ft
2 main spans
Daily traffic
11,000
2009 count
Owner
State
State Highway Agency

About this bridge

SR 233 (avenue 26) over State Route 99 is a concrete continuous box beam or girders - multiple carrying SR 233 (avenue 26) over State Route 99 in Madera County, California. It was built in 1957, 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 11,000 vehicles a day, roughly 8% of them trucks, projected to reach 15,876 by 2041. The structure is 148 ft (45.2 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSR 233 (avenue 26)
CrossesState Route 99
Location06-MAD-233-3.87
RouteState Highway 233
Coordinates37.12681, -120.25256
Functional classUrban Other Principal Arterial

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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating41.8 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length148 ft (45.2 m)
Longest span71 ft (21.6 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2009)
Projected traffic15,876 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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 SR 233 (avenue 26) over State Route 99 built?

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

What condition is SR 233 (avenue 26) over State Route 99 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 SR 233 (avenue 26) over State Route 99 carry?

About 11,000 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is SR 233 (avenue 26) over State Route 99?

The structure is 148 ft (45.2 m) long with a longest span of 71 ft (21.6 m) and a deck 35 ft wide.

Who owns SR 233 (avenue 26) over State Route 99?

It is owned by the State Highway Agency.