US Bridges

Nichols RD over UP RR BNSF RY & AMTRAK

Good

Contra Costa County, California · 0.3 MI N Port Chicago Hy · Structure no. 28C0171

Built
1991
34 years old
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete Continuous
Length
97 ft
3 main spans
Daily traffic
485
2013 count
Owner
County
County Highway Agency

About this bridge

Nichols RD over UP RR BNSF RY & AMTRAK is a prestressed concrete continuous slab carrying Nichols RD over UP RR BNSF RY & AMTRAK in Contra Costa County, California. It was built in 1991, so it is 34 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 485 vehicles a day, roughly 40% of them trucks, projected to reach 655 by 2046. The structure is 97 ft (29.6 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNichols RD
CrossesUP RR BNSF RY & AMTRAK
Location0.3 MI N Port Chicago Hy
RouteCounty Highway 0
Coordinates38.04508, -121.98799
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length97 ft (29.6 m)
Longest span42 ft (12.8 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic485 (2013)
Projected traffic655 by 2046
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Nichols RD over UP RR BNSF RY & AMTRAK built?

It was built in 1991, making it 34 years old in 2025.

What condition is Nichols RD over UP RR BNSF RY & AMTRAK in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Nichols RD over UP RR BNSF RY & AMTRAK carry?

About 485 vehicles per day (2013 count), of which roughly 40% are trucks.

How long is Nichols RD over UP RR BNSF RY & AMTRAK?

The structure is 97 ft (29.6 m) long with a longest span of 42 ft (12.8 m) and a deck 31 ft wide.

Who owns Nichols RD over UP RR BNSF RY & AMTRAK?

It is owned by the County Highway Agency.