US Bridges

Md 100 Wbr over Stony Run

Good

Anne Arundel County, Maryland · 0.5 MI W of Md 170 · Structure no. 100000020186014

Built
1995
30 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
685 ft
5 main spans
Daily traffic
74,302
2009 count
Owner
State
State Highway Agency

About this bridge

Md 100 Wbr over Stony Run is a steel continuous stringer/multi-beam or girder carrying Md 100 Wbr over Stony Run in Anne Arundel County, Maryland. It was built in 1995, so it is 30 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 74,302 vehicles a day, roughly 8% of them trucks, projected to reach 40,840 by 2026. The structure is 685 ft (208.8 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 100 Wbr
CrossesStony Run
Location0.5 MI W of Md 170
RouteState Highway 100
Coordinates39.14788, -76.70157
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length685 ft (208.8 m)
Longest span150 ft (45.7 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,302 (2009)
Projected traffic40,840 by 2026
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Md 100 Wbr over Stony Run built?

It was built in 1995, making it 30 years old in 2025.

What condition is Md 100 Wbr over Stony Run 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 May 2023.

How much traffic does Md 100 Wbr over Stony Run carry?

About 74,302 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 100 Wbr over Stony Run?

The structure is 685 ft (208.8 m) long with a longest span of 150 ft (45.7 m) and a deck 42 ft wide.

Who owns Md 100 Wbr over Stony Run?

It is owned by the State Highway Agency.