US Bridges

Marconi Ave over UP BNSF AMTRAK Scrtd Lrt

Fair

Sacramento County, California · 0.2 MI W of SR 51 · Structure no. 24C0112

Built
1984
41 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
422 ft
4 main spans
Daily traffic
23,996
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marconi Ave over UP BNSF AMTRAK Scrtd Lrt is a prestressed concrete continuous box beam or girders - multiple carrying Marconi Ave over UP BNSF AMTRAK Scrtd Lrt in Sacramento County, California. It was built in 1984, so it is 41 years old, younger 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 23,996 vehicles a day, roughly 10% of them trucks, projected to reach 127,998 by 2041. The structure is 422 ft (128.6 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMarconi Ave
CrossesUP BNSF AMTRAK Scrtd Lrt
Location0.2 MI W of SR 51
RouteCity Street 0
CountySacramento County
StateCalifornia
Coordinates38.62217, -121.42227
Functional classRural Minor 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
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 inspectionOctober 2023
Inspection intervalevery 24 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 rating86.8 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length422 ft (128.6 m)
Longest span127 ft (38.7 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,996 (2014)
Projected traffic127,998 by 2041
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
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 Marconi Ave over UP BNSF AMTRAK Scrtd Lrt built?

It was built in 1984, making it 41 years old in 2025.

What condition is Marconi Ave over UP BNSF AMTRAK Scrtd Lrt 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 October 2023.

How much traffic does Marconi Ave over UP BNSF AMTRAK Scrtd Lrt carry?

About 23,996 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Marconi Ave over UP BNSF AMTRAK Scrtd Lrt?

The structure is 422 ft (128.6 m) long with a longest span of 127 ft (38.7 m) and a deck 68 ft wide.

Who owns Marconi Ave over UP BNSF AMTRAK Scrtd Lrt?

It is owned by the City or Municipal Highway Agency.