US Bridges

Manthey Road over Paradise Cut

Fair

San Joaquin County, California · 1.2 MI S/W Stewart RD · Structure no. 29C0122

Built
1932
93 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
442 ft
10 main spans
Daily traffic
50
1982 count
Owner
City
City or Municipal Highway Agency

About this bridge

Manthey Road over Paradise Cut is a steel stringer/multi-beam or girder carrying Manthey Road over Paradise Cut in San Joaquin County, California. It was built in 1932, so it is 93 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 50 vehicles a day, projected to reach 99 by 2044. The structure is 442 ft (134.6 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesManthey Road
CrossesParadise Cut
Location1.2 MI S/W Stewart RD
RouteCounty Highway 0
CountySan Joaquin County
StateCalifornia
Coordinates37.77096, -121.32734
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length442 ft (134.6 m)
Longest span44 ft (13.4 m)
Deck width35 ft (10.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1982)
Projected traffic99 by 2044
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Manthey Road over Paradise Cut built?

It was built in 1932, making it 93 years old in 2025.

What condition is Manthey Road over Paradise Cut 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 September 2024.

How much traffic does Manthey Road over Paradise Cut carry?

About 50 vehicles per day (1982 count).

How long is Manthey Road over Paradise Cut?

The structure is 442 ft (134.6 m) long with a longest span of 44 ft (13.4 m) and a deck 35 ft wide.

Who owns Manthey Road over Paradise Cut?

It is owned by the City or Municipal Highway Agency.