US Bridges

Molera RD over Tembladero Slough

Good

Monterey County, California · 0.8 MI S SR1 · Structure no. 44C0100

Built
1959
66 years old
Condition
Good
inspected September 2021
Type
Slab
Concrete Continuous
Length
101 ft
4 main spans
Daily traffic
1,700
2017 count
Owner
County
County Highway Agency

About this bridge

Molera RD over Tembladero Slough is a concrete continuous slab carrying Molera RD over Tembladero Slough in Monterey County, California. It was built in 1959, so it is 66 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 1,700 vehicles a day, roughly 3% of them trucks, projected to reach 1,769 by 2038. The structure is 101 ft (30.8 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMolera RD
CrossesTembladero Slough
Location0.8 MI S SR1
RouteCounty Highway 0
Coordinates36.77209, -121.78771
Functional classRural Local

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 protection9 ExcellentNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.3 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2017)
Projected traffic1,769 by 2038
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Molera RD over Tembladero Slough built?

It was built in 1959, making it 66 years old in 2025.

What condition is Molera RD over Tembladero Slough 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 September 2021.

How much traffic does Molera RD over Tembladero Slough carry?

About 1,700 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Molera RD over Tembladero Slough?

The structure is 101 ft (30.8 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Molera RD over Tembladero Slough?

It is owned by the County Highway Agency.