US Bridges

Is 97 Sbr over Md 450

Good

Anne Arundel County, Maryland · 0.36 Mile North of Is 595 · Structure no. 100000020157012

Built
1987
38 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
125 ft
1 main span
Daily traffic
91,300
2009 count
Owner
State
State Highway Agency

About this bridge

Is 97 Sbr over Md 450 is a steel stringer/multi-beam or girder carrying Is 97 Sbr over Md 450 in Anne Arundel County, Maryland. It was built in 1987, so it is 38 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 91,300 vehicles a day, roughly 8% of them trucks, projected to reach 145,160 by 2029. The structure is 125 ft (38.1 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

No coordinates are recorded for this structure.

CarriesIs 97 Sbr
CrossesMd 450
Location0.36 Mile North of Is 595
RouteInterstate 97
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating80.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length125 ft (38.1 m)
Longest span120 ft (36.6 m)
Deck width56 ft (17.1 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91,300 (2009)
Projected traffic145,160 by 2029
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 97 Sbr over Md 450 built?

It was built in 1987, making it 38 years old in 2025.

What condition is Is 97 Sbr over Md 450 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Is 97 Sbr over Md 450 carry?

About 91,300 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 97 Sbr over Md 450?

The structure is 125 ft (38.1 m) long with a longest span of 120 ft (36.6 m) and a deck 56 ft wide.

Who owns Is 97 Sbr over Md 450?

It is owned by the State Highway Agency.