TR Bridge(rampc) over Inner Loop

Fair

District of Columbia, District of Columbia · TR Br Ramp C & Inner · Structure no. 1205

Built: 1964; 61 years old
Condition: Fair; inspected April 2024
Type: Stringer/Multi-beam or Girder; Steel Continuous
Length: 247 ft; 3 main spans
Daily traffic: 17,500; 1992 count
Owner: State; State Highway Agency

About this bridge

TR Bridge(rampc) over Inner Loop is a steel continuous stringer/multi-beam or girder carrying TR Bridge(rampc) over Inner Loop in District of Columbia, District of Columbia. It was built in 1964, so it is 61 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 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 17,500 vehicles a day, roughly 1% of them trucks, projected to reach 17,500 by 2027. The structure is 247 ft (75.4 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

No coordinates are recorded for this structure.

CarriesTR Bridge(rampc)

CrossesInner Loop

LocationTR Br Ramp C & Inner

RouteInterstate 66

CountyDistrict of Columbia

StateDistrict of Columbia

Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

Component	Rating	Meaning
Deck	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.

Last inspectionApril 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation6: Equal to present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Approach roadway alignment7: Better than present minimum criteria

Operating rating45.9 US tons

Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialSteel Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length247 ft (75.4 m)

Longest span99 ft (30.2 m)

Deck width26 ft (7.9 m)

Roadway width20 ft (6.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,500 (1992)

Projected traffic17,500 by 2027

Trucks1%

Lanes on structure1

Traffic directionOne-way traffic

CarriesHighway

CrossesHighway

Detour if closed1.2 mi (2 km)

TollOn a free road

National Highway SystemYes

Strategic Highway NetworkInterstate STRAHNET route

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$1.5 million

NavigationNot applicable (no waterway)

Frequently asked questions

When was TR Bridge(rampc) over Inner Loop built?

It was built in 1964, making it 61 years old in 2025.

What condition is TR Bridge(rampc) over Inner Loop 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 2024.

How much traffic does TR Bridge(rampc) over Inner Loop carry?

About 17,500 vehicles per day (1992 count), of which roughly 1% are trucks.

How long is TR Bridge(rampc) over Inner Loop?

The structure is 247 ft (75.4 m) long with a longest span of 99 ft (30.2 m) and a deck 26 ft wide.

Who owns TR Bridge(rampc) over Inner Loop?

It is owned by the State Highway Agency.