US Bridges

State Route 156 over UP RR Branch

Fair

San Benito County, California · 05-SBT-156-R10.47 · Structure no. 43 0046

Built
1997
28 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
160 ft
1 main span
Daily traffic
13,800
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 156 over UP RR Branch is a prestressed concrete box beam or girders - single or spread carrying State Route 156 over UP RR Branch in San Benito County, California. It was built in 1997, so it is 28 years old, younger 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 13,800 vehicles a day, projected to reach 24,599 by 2042. The structure is 160 ft (48.8 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesState Route 156
CrossesUP RR Branch
Location05-SBT-156-R10.47
RouteState Highway 156
CountySan Benito County
StateCalifornia
Coordinates36.88282, -121.43078
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length160 ft (48.8 m)
Longest span154 ft (46.8 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,800 (2009)
Projected traffic24,599 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 UP RR Branch built?

It was built in 1997, making it 28 years old in 2025.

What condition is State Route 156 over UP RR Branch 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 April 2024.

How much traffic does State Route 156 over UP RR Branch carry?

About 13,800 vehicles per day (2009 count).

How long is State Route 156 over UP RR Branch?

The structure is 160 ft (48.8 m) long with a longest span of 154 ft (46.8 m) and a deck 44 ft wide.

Who owns State Route 156 over UP RR Branch?

It is owned by the State Highway Agency.