US Bridges

Md 100 Ebr over US 29 Ramp 7

Good

Howard County, Maryland · 0.05 M N of Br No 1311900 · Structure no. 100000130120010

Built
1992
33 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
132 ft
1 main span
Daily traffic
75,332
2009 count
Owner
State
State Highway Agency

About this bridge

Md 100 Ebr over US 29 Ramp 7 is a steel stringer/multi-beam or girder carrying Md 100 Ebr over US 29 Ramp 7 in Howard County, Maryland. It was built in 1992, so it is 33 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 75,332 vehicles a day, roughly 8% of them trucks, projected to reach 13,084 by 2028. The structure is 132 ft (40.2 m) long and 48 ft wide.

CarriesMd 100 Ebr
CrossesUS 29 Ramp 7
Location0.05 M N of Br No 1311900
RouteState Highway 100
Coordinates39.25182, -76.82214
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.
Last inspectionMay 2023
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 rating110.1 US tons
Inventory rating65 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length132 ft (40.2 m)
Longest span130 ft (39.6 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75,332 (2009)
Projected traffic13,084 by 2028
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 100 Ebr over US 29 Ramp 7 built?

It was built in 1992, making it 33 years old in 2025.

What condition is Md 100 Ebr over US 29 Ramp 7 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 Ebr over US 29 Ramp 7 carry?

About 75,332 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 100 Ebr over US 29 Ramp 7?

The structure is 132 ft (40.2 m) long with a longest span of 130 ft (39.6 m) and a deck 48 ft wide.

Who owns Md 100 Ebr over US 29 Ramp 7?

It is owned by the State Highway Agency.