US Bridges

Southern Avenue over Suitland Parkway

Good

District of Columbia, District of Columbia · S0 Ave over Suit Pkwy · Structure no. 0070

Built
1976
49 years old, rebuilt 2005
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
413 ft
3 main spans
Daily traffic
17,800
2018 count
Owner
State
State Highway Agency

About this bridge

Southern Avenue over Suitland Parkway is a prestressed concrete box beam or girders - multiple carrying Southern Avenue over Suitland Parkway in District of Columbia, District of Columbia. It was built in 1976 and reconstructed in 2005, so it is 49 years old, younger than the District of Columbia average of 63.7 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 17,800 vehicles a day, roughly 5% of them trucks, projected to reach 18,500 by 2027. The structure is 413 ft (125.9 m) long and 60 ft wide.

CarriesSouthern Avenue
CrossesSuitland Parkway
LocationS0 Ave over Suit Pkwy
RouteCity Street 0
Coordinates38.84945, -76.96513
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
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 alignment6: Equal to present minimum criteria
Operating rating55.7 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length413 ft (125.9 m)
Longest span164 ft (50 m)
Deck width60 ft (18.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,800 (2018)
Projected traffic18,500 by 2027
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$250,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Southern Avenue over Suitland Parkway built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2005.

What condition is Southern Avenue over Suitland Parkway 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 January 2024.

How much traffic does Southern Avenue over Suitland Parkway carry?

About 17,800 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Southern Avenue over Suitland Parkway?

The structure is 413 ft (125.9 m) long with a longest span of 164 ft (50 m) and a deck 60 ft wide.

Who owns Southern Avenue over Suitland Parkway?

It is owned by the State Highway Agency.