US Bridges

State Route 4 over Franklin Equip & Pipe Uc

Fair

Contra Costa County, California · 04-CC-004-R7.27 · Structure no. 28 0235

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Arch - Deck
Steel
Length
21 ft
1 main span
Daily traffic
55,000
2018 count
Owner
State
State Highway Agency

About this bridge

State Route 4 over Franklin Equip & Pipe Uc is a steel arch - deck carrying State Route 4 over Franklin Equip & Pipe Uc 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 55,000 vehicles a day, roughly 8% of them trucks, projected to reach 59,981 by 2042. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesState Route 4
CrossesFranklin Equip & Pipe Uc
Location04-CC-004-R7.27
RouteState Highway 4
CountyContra Costa County
StateCalifornia
Coordinates37.99896, -122.14665
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span21 ft (6.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,000 (2018)
Projected traffic59,981 by 2042
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed3.1 mi (5 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 4 over Franklin Equip & Pipe Uc built?

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

What condition is State Route 4 over Franklin Equip & Pipe Uc 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 May 2024.

How much traffic does State Route 4 over Franklin Equip & Pipe Uc carry?

About 55,000 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is State Route 4 over Franklin Equip & Pipe Uc?

The structure is 21 ft (6.3 m) long with a longest span of 21 ft (6.3 m).

Who owns State Route 4 over Franklin Equip & Pipe Uc?

It is owned by the State Highway Agency.