US Bridges

Md 100M over Md 100

Good

Anne Arundel County, Maryland · 0.13 Mile North of Md 103 · Structure no. 100000020179010

Built
1996
29 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
205 ft
2 main spans
Daily traffic
9,784
6 count
Owner
State
State Highway Agency

About this bridge

Md 100M over Md 100 is a steel continuous stringer/multi-beam or girder carrying Md 100M over Md 100 in Anne Arundel County, Maryland. It was built in 1996, so it is 29 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 9,784 vehicles a day, roughly 8% of them trucks, projected to reach 11,281 by 26. The structure is 205 ft (62.5 m) long and 66 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMd 100M
CrossesMd 100
Location0.13 Mile North of Md 103
RouteState Highway 100M
Coordinates39.1783, -76.73832
Functional classUrban Local

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.9 US tons
Inventory rating46.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length205 ft (62.5 m)
Longest span108 ft (32.9 m)
Deck width66 ft (20.1 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,784 (6)
Projected traffic11,281 by 26
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 100M over Md 100 built?

It was built in 1996, making it 29 years old in 2025.

What condition is Md 100M over Md 100 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 February 2024.

How much traffic does Md 100M over Md 100 carry?

About 9,784 vehicles per day (6 count), of which roughly 8% are trucks.

How long is Md 100M over Md 100?

The structure is 205 ft (62.5 m) long with a longest span of 108 ft (32.9 m) and a deck 66 ft wide.

Who owns Md 100M over Md 100?

It is owned by the State Highway Agency.