US Bridges

Portland Ave over Kansas City Southern Rr.

Fair

Caddo Parish, Louisiana · 0.5 M W I20 · Structure no. 040932296934661

Built
1979
46 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
202 ft
2 main spans
Daily traffic
5,548
1979 count
Owner
City
City or Municipal Highway Agency

About this bridge

Portland Ave over Kansas City Southern Rr. is a prestressed concrete stringer/multi-beam or girder carrying Portland Ave over Kansas City Southern Rr. in Caddo Parish, Louisiana. It was built in 1979, so it is 46 years old, older than the Louisiana average of 43 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 5,548 vehicles a day, projected to reach 6,102 by 1999. The structure is 202 ft (61.6 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPortland Ave
CrossesKansas City Southern Rr.
Location0.5 M W I20
RouteCounty Highway 0
CountyCaddo Parish
StateLouisiana
Coordinates32.49381, -93.77759
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,548 (1979)
Projected traffic6,102 by 1999
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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 Portland Ave over Kansas City Southern Rr. built?

It was built in 1979, making it 46 years old in 2025.

What condition is Portland Ave over Kansas City Southern Rr. 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 April 2023.

How much traffic does Portland Ave over Kansas City Southern Rr. carry?

About 5,548 vehicles per day (1979 count).

How long is Portland Ave over Kansas City Southern Rr.?

The structure is 202 ft (61.6 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns Portland Ave over Kansas City Southern Rr.?

It is owned by the City or Municipal Highway Agency.