US Bridges

Monument Blvd over Pine Creek

Fair

Contra Costa County, California · 0.2 MI NE Oak Grove RD · Structure no. 28C0095

Built
1940
85 years old, rebuilt 1953
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
32,500
1979 count
Owner
City
City or Municipal Highway Agency

About this bridge

Monument Blvd over Pine Creek is a concrete continuous slab carrying Monument Blvd over Pine Creek in Contra Costa County, California. It was built in 1940 and reconstructed in 1953, so it is 85 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 32,500 vehicles a day, roughly 5% of them trucks, projected to reach 51,303 by 2041. The structure is 29 ft (8.8 m) long and 98 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMonument Blvd
CrossesPine Creek
Location0.2 MI NE Oak Grove RD
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.95849, -122.03569
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span13 ft (4.1 m)
Deck width98 ft (29.8 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,500 (1979)
Projected traffic51,303 by 2041
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Monument Blvd over Pine Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1953.

What condition is Monument Blvd over Pine Creek 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 November 2023.

How much traffic does Monument Blvd over Pine Creek carry?

About 32,500 vehicles per day (1979 count), of which roughly 5% are trucks.

How long is Monument Blvd over Pine Creek?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4.1 m) and a deck 98 ft wide.

Who owns Monument Blvd over Pine Creek?

It is owned by the City or Municipal Highway Agency.