US Bridges

State Route 156 over Prunedale South Road

Good

Monterey County, California · 05-MON-156-T5.00 · Structure no. 44 0278

Built
2005
20 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
29,750
2010 count
Owner
State
State Highway Agency

About this bridge

State Route 156 over Prunedale South Road is a prestressed concrete box beam or girders - single or spread carrying State Route 156 over Prunedale South Road in Monterey County, California. It was built in 2005, so it is 20 years old, younger 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 29,750 vehicles a day, roughly 15% of them trucks, projected to reach 61,154 by 2044. The structure is 105 ft (32.1 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesState Route 156
CrossesPrunedale South Road
Location05-MON-156-T5.00
RouteState Highway 156
Coordinates36.78864, -121.67096
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length105 ft (32.1 m)
Longest span100 ft (30.6 m)
Deck width52 ft (15.8 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,750 (2010)
Projected traffic61,154 by 2044
Trucks15%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 156 over Prunedale South Road built?

It was built in 2005, making it 20 years old in 2025.

What condition is State Route 156 over Prunedale South Road 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 August 2024.

How much traffic does State Route 156 over Prunedale South Road carry?

About 29,750 vehicles per day (2010 count), of which roughly 15% are trucks.

How long is State Route 156 over Prunedale South Road?

The structure is 105 ft (32.1 m) long with a longest span of 100 ft (30.6 m) and a deck 52 ft wide.

Who owns State Route 156 over Prunedale South Road?

It is owned by the State Highway Agency.