US Bridges

G ST over UP RR

Fair

Contra Costa County, California · 0.4 MI N/O SR4 Intch · Structure no. 28C0291

Built
1967
58 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
158 ft
3 main spans
Daily traffic
6,100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

G ST over UP RR is a prestressed concrete continuous stringer/multi-beam or girder carrying G ST over UP RR in Contra Costa County, California. It was built in 1967, so it is 58 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 6,100 vehicles a day, roughly 3% of them trucks, projected to reach 10,638 by 2047. The structure is 158 ft (48.2 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesG ST
CrossesUP RR
Location0.4 MI N/O SR4 Intch
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates38.00333, -121.81506
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
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 alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.2 m)
Longest span71 ft (21.6 m)
Deck width56 ft (17.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2020)
Projected traffic10,638 by 2047
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was G ST over UP RR built?

It was built in 1967, making it 58 years old in 2025.

What condition is G ST over UP RR 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 January 2025.

How much traffic does G ST over UP RR carry?

About 6,100 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is G ST over UP RR?

The structure is 158 ft (48.2 m) long with a longest span of 71 ft (21.6 m) and a deck 56 ft wide.

Who owns G ST over UP RR?

It is owned by the City or Municipal Highway Agency.