US Bridges

Park Ave over Porter Slough

Poor

Tulare County, California · 0.4 MI N SR190 @corona DR · Structure no. 46C0298

Built
1948
77 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete Continuous
Length
49 ft
3 main spans
Daily traffic
1,100
1978 count
Owner
City
City or Municipal Highway Agency

About this bridge

Park Ave over Porter Slough is a concrete continuous slab carrying Park Ave over Porter Slough in Tulare County, California. It was built in 1948, so it is 77 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,100 vehicles a day, roughly 1% of them trucks, projected to reach 1,248 by 2047. The structure is 49 ft (14.9 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPark Ave
CrossesPorter Slough
Location0.4 MI N SR190 @corona DR
RouteCounty Highway 0
CountyTulare County
StateCalifornia
Coordinates36.06035, -119.00377
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55 US tons
Inventory rating32.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span16 ft (4.9 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (1978)
Projected traffic1,248 by 2047
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$245,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Park Ave over Porter Slough built?

It was built in 1948, making it 77 years old in 2025.

What condition is Park Ave over Porter Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Park Ave over Porter Slough carry?

About 1,100 vehicles per day (1978 count), of which roughly 1% are trucks.

How long is Park Ave over Porter Slough?

The structure is 49 ft (14.9 m) long with a longest span of 16 ft (4.9 m) and a deck 32 ft wide.

Who owns Park Ave over Porter Slough?

It is owned by the City or Municipal Highway Agency.