US Bridges

I-495 O.L. over AMTRAK

Fair

Prince George's County, Maryland · 0.18 Mile South of Md 450 · Structure no. 100000160145016

Built
1964
61 years old, rebuilt 1990
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
248 ft
3 main spans
Daily traffic
226,100
2020 count
Owner
State
State Highway Agency

About this bridge

I-495 O.L. over AMTRAK is a steel stringer/multi-beam or girder carrying I-495 O.L. over AMTRAK in Prince George's County, Maryland. It was built in 1964 and reconstructed in 1990, so it is 61 years old, older than the Maryland average of 52.6 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 226,100 vehicles a day, roughly 8% of them trucks, projected to reach 217,662 by 2040. The structure is 248 ft (75.6 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-495 O.L.
CrossesAMTRAK
Location0.18 Mile South of Md 450
RouteInterstate 95
CountyPrince George's County
StateMaryland
Coordinates38.9573, -76.86496
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.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length248 ft (75.6 m)
Longest span95 ft (29 m)
Deck width77 ft (23.5 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic226,100 (2020)
Projected traffic217,662 by 2040
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-495 O.L. over AMTRAK built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1990.

What condition is I-495 O.L. over AMTRAK 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 February 2025.

How much traffic does I-495 O.L. over AMTRAK carry?

About 226,100 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is I-495 O.L. over AMTRAK?

The structure is 248 ft (75.6 m) long with a longest span of 95 ft (29 m) and a deck 77 ft wide.

Who owns I-495 O.L. over AMTRAK?

It is owned by the State Highway Agency.