US Bridges

State Route 156 EB over UP RR & AMTRAK

Good

Monterey County, California · 05-MON-156-R1.59 · Structure no. 44 0033R

Built
1966
59 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
154 ft
3 main spans
Daily traffic
16,116
2008 count
Owner
State
State Highway Agency

About this bridge

State Route 156 EB over UP RR & AMTRAK is a concrete continuous box beam or girders - multiple carrying State Route 156 EB over UP RR & AMTRAK in Monterey County, California. It was built in 1966, so it is 59 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 16,116 vehicles a day, roughly 9% of them trucks, projected to reach 20,674 by 2044. The structure is 154 ft (46.9 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesState Route 156 EB
CrossesUP RR & AMTRAK
Location05-MON-156-R1.59
RouteState Highway 156
Coordinates36.76671, -121.74689
Functional classRural Principal Arterial - Other

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating42.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length154 ft (46.9 m)
Longest span69 ft (21 m)
Deck width39 ft (11.9 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,116 (2008)
Projected traffic20,674 by 2044
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.7 mi (14 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 EB over UP RR & AMTRAK built?

It was built in 1966, making it 59 years old in 2025.

What condition is State Route 156 EB over UP RR & AMTRAK 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 EB over UP RR & AMTRAK carry?

About 16,116 vehicles per day (2008 count), of which roughly 9% are trucks.

How long is State Route 156 EB over UP RR & AMTRAK?

The structure is 154 ft (46.9 m) long with a longest span of 69 ft (21 m) and a deck 39 ft wide.

Who owns State Route 156 EB over UP RR & AMTRAK?

It is owned by the State Highway Agency.