US Bridges

Michigan Avenue over CSX & 9th St. NE

Fair

District of Columbia, District of Columbia · CSX RR & Michigan Ave · Structure no. 0596

Built
1937
88 years old, rebuilt 1982
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
617 ft
6 main spans
Daily traffic
18,200
2007 count
Owner
State
State Highway Agency

About this bridge

Michigan Avenue over CSX & 9th St. NE is a steel continuous stringer/multi-beam or girder carrying Michigan Avenue over CSX & 9th St. NE in District of Columbia, District of Columbia. It was built in 1937 and reconstructed in 1982, so it is 88 years old, older than the District of Columbia average of 63.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 18,200 vehicles a day, roughly 4% of them trucks, projected to reach 20,000 by 2027. The structure is 617 ft (188.1 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMichigan Avenue
CrossesCSX & 9th St. NE
LocationCSX RR & Michigan Ave
RouteCity Street 0
Coordinates38.93372, -76.99346
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating49.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length617 ft (188.1 m)
Longest span132 ft (40.2 m)
Deck width59 ft (18 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,200 (2007)
Projected traffic20,000 by 2027
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
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$750,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Michigan Avenue over CSX & 9th St. NE built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1982.

What condition is Michigan Avenue over CSX & 9th St. NE 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 2024.

How much traffic does Michigan Avenue over CSX & 9th St. NE carry?

About 18,200 vehicles per day (2007 count), of which roughly 4% are trucks.

How long is Michigan Avenue over CSX & 9th St. NE?

The structure is 617 ft (188.1 m) long with a longest span of 132 ft (40.2 m) and a deck 59 ft wide.

Who owns Michigan Avenue over CSX & 9th St. NE?

It is owned by the State Highway Agency.