US Bridges

Oakland Boulevard over N680&E24-YGNACIO Off Rmp

Poor

Contra Costa County, California · 04-CC-680-14.56-WLC · Structure no. 28 0315S

Built
1997
28 years old
Condition
Poor
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete
Length
96 ft
1 main span
Daily traffic
2,000
2009 count
Owner
State
State Highway Agency

About this bridge

Oakland Boulevard over N680&E24-YGNACIO Off Rmp is a concrete box beam or girders - multiple carrying Oakland Boulevard over N680&E24-YGNACIO Off Rmp in Contra Costa 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,000 vehicles a day, roughly 3% of them trucks, projected to reach 2,781 by 2047. The structure is 96 ft (29.4 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesOakland Boulevard
CrossesN680&E24-YGNACIO Off Rmp
Location04-CC-680-14.56-WLC
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.90159, -122.06944
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length96 ft (29.4 m)
Longest span96 ft (29.4 m)
Deck width40 ft (12.2 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2009)
Projected traffic2,781 by 2047
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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 Oakland Boulevard over N680&E24-YGNACIO Off Rmp built?

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

What condition is Oakland Boulevard over N680&E24-YGNACIO Off Rmp in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does Oakland Boulevard over N680&E24-YGNACIO Off Rmp carry?

About 2,000 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Oakland Boulevard over N680&E24-YGNACIO Off Rmp?

The structure is 96 ft (29.4 m) long with a longest span of 96 ft (29.4 m) and a deck 40 ft wide.

Who owns Oakland Boulevard over N680&E24-YGNACIO Off Rmp?

It is owned by the State Highway Agency.