US Bridges

Quarantine Road over I-695

Fair

Baltimore city, Maryland · 0.74 MI N of Chemical RD · Structure no. 300000BCZ501010

Built
1972
53 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
260 ft
2 main spans
Daily traffic
26,400
2019 count
Owner
Toll Authority
State Toll Authority

About this bridge

Quarantine Road over I-695 is a steel continuous stringer/multi-beam or girder carrying Quarantine Road over I-695 in Baltimore city, Maryland. It was built in 1972, so it is 53 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 26,400 vehicles a day, roughly 9% of them trucks, projected to reach 32,153 by 2041. The structure is 260 ft (79.2 m) long and 56 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesQuarantine Road
CrossesI-695
Location0.74 MI N of Chemical RD
RouteCity Street 4420
CountyBaltimore city
StateMaryland
Coordinates39.20525, -76.55971
Functional classUrban Other Principal 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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span107 ft (32.6 m)
Deck width56 ft (17.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,400 (2019)
Projected traffic32,153 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 Quarantine Road over I-695 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Quarantine Road over I-695 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 2024.

How much traffic does Quarantine Road over I-695 carry?

About 26,400 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Quarantine Road over I-695?

The structure is 260 ft (79.2 m) long with a longest span of 107 ft (32.6 m) and a deck 56 ft wide.

Who owns Quarantine Road over I-695?

It is owned by the State Toll Authority.