US Bridges

Is 595 over Patuxent River

Fair

Anne Arundel County, Maryland · On Prince Georges CO Line · Structure no. 100000020026010

Built
1951
74 years old, rebuilt 1994
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
3 main spans
Daily traffic
81,102
2009 count
Owner
State
State Highway Agency

About this bridge

Is 595 over Patuxent River is a steel continuous stringer/multi-beam or girder carrying Is 595 over Patuxent River in Anne Arundel County, Maryland. It was built in 1951 and reconstructed in 1994, so it is 74 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 81,102 vehicles a day, roughly 7% of them trucks, projected to reach 111,102 by 2029. The structure is 232 ft (70.7 m) long and 157 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIs 595
CrossesPatuxent River
LocationOn Prince Georges CO Line
RouteInterstate 595
Coordinates38.95559, -76.69454
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length232 ft (70.7 m)
Longest span77 ft (23.5 m)
Deck width157 ft (47.9 m)
Roadway width151 ft (46 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81,102 (2009)
Projected traffic111,102 by 2029
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 595 over Patuxent River built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1994.

What condition is Is 595 over Patuxent River 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 September 2024.

How much traffic does Is 595 over Patuxent River carry?

About 81,102 vehicles per day (2009 count), of which roughly 7% are trucks.

How long is Is 595 over Patuxent River?

The structure is 232 ft (70.7 m) long with a longest span of 77 ft (23.5 m) and a deck 157 ft wide.

Who owns Is 595 over Patuxent River?

It is owned by the State Highway Agency.