US Bridges

Is 595 over South River

Fair

Anne Arundel County, Maryland · 0.94 M W of Br No 0203100 · Structure no. 100000020030010

Built
1950
75 years old, rebuilt 1993
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
202 ft
3 main spans
Daily traffic
101,670
2009 count
Owner
State
State Highway Agency

About this bridge

Is 595 over South River is a steel stringer/multi-beam or girder carrying Is 595 over South River in Anne Arundel County, Maryland. It was built in 1950 and reconstructed in 1993, so it is 75 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 101,670 vehicles a day, roughly 8% of them trucks, projected to reach 166,110 by 2029. The structure is 202 ft (61.6 m) long and 135 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesIs 595
CrossesSouth River
Location0.94 M W of Br No 0203100
RouteInterstate 595
CountyAnne Arundel County
StateMaryland
Coordinates38.98118, -76.60518
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.5 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span66 ft (20.1 m)
Deck width135 ft (41.2 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101,670 (2009)
Projected traffic166,110 by 2029
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed14.9 mi (24 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 South River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1993.

What condition is Is 595 over South 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 March 2023.

How much traffic does Is 595 over South River carry?

About 101,670 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 595 over South River?

The structure is 202 ft (61.6 m) long with a longest span of 66 ft (20.1 m) and a deck 135 ft wide.

Who owns Is 595 over South River?

It is owned by the State Highway Agency.