US Bridges

Md 450 over Md 564 Ebr AMTRAK

Fair

Prince George's County, Maryland · 0.2 Mile East of Md 564 · Structure no. 100000160014010

Built
1989
36 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
283 ft
3 main spans
Daily traffic
36,261
2020 count
Owner
State
State Highway Agency

About this bridge

Md 450 over Md 564 Ebr AMTRAK is a steel continuous stringer/multi-beam or girder carrying Md 450 over Md 564 Ebr AMTRAK in Prince George's County, Maryland. It was built in 1989, so it is 36 years old, younger 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 36,261 vehicles a day, roughly 6% of them trucks, projected to reach 71,874 by 2040. The structure is 283 ft (86.3 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMd 450
CrossesMd 564 Ebr AMTRAK
Location0.2 Mile East of Md 564
RouteState Highway 450
CountyPrince George's County
StateMaryland
Coordinates38.96349, -76.85906
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 inspectionJune 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 alignment6: Equal to present minimum criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length283 ft (86.3 m)
Longest span110 ft (33.5 m)
Deck width64 ft (19.5 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,261 (2020)
Projected traffic71,874 by 2040
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 450 over Md 564 Ebr AMTRAK built?

It was built in 1989, making it 36 years old in 2025.

What condition is Md 450 over Md 564 Ebr 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 June 2024.

How much traffic does Md 450 over Md 564 Ebr AMTRAK carry?

About 36,261 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Md 450 over Md 564 Ebr AMTRAK?

The structure is 283 ft (86.3 m) long with a longest span of 110 ft (33.5 m) and a deck 64 ft wide.

Who owns Md 450 over Md 564 Ebr AMTRAK?

It is owned by the State Highway Agency.