US Bridges

Md 929A over US 29 Future Ramp E

Fair

Montgomery County, Maryland · 0.033 Mile West of US 29 · Structure no. 100000150181040

Built
2004
21 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
29 ft
1 main span
Daily traffic
36,072
2009 count
Owner
State
State Highway Agency

About this bridge

Md 929A over US 29 Future Ramp E is a concrete frame carrying Md 929A over US 29 Future Ramp E in Montgomery County, Maryland. It was built in 2004, so it is 21 years old, younger 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 36,072 vehicles a day, roughly 3% of them trucks, projected to reach 38,639 by 2026. The structure is 29 ft (8.8 m) long and 135 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMd 929A
CrossesUS 29 Future Ramp E
Location0.033 Mile West of US 29
RouteState Highway 929A
CountyMontgomery County
StateMaryland
Coordinates39.06274, -76.96347
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating110.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length29 ft (8.8 m)
Longest span22 ft (6.7 m)
Deck width135 ft (41.1 m)
Roadway width92 ft (28.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,072 (2009)
Projected traffic38,639 by 2026
Trucks3%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 929A over US 29 Future Ramp E built?

It was built in 2004, making it 21 years old in 2025.

What condition is Md 929A over US 29 Future Ramp E 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 May 2024.

How much traffic does Md 929A over US 29 Future Ramp E carry?

About 36,072 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Md 929A over US 29 Future Ramp E?

The structure is 29 ft (8.8 m) long with a longest span of 22 ft (6.7 m) and a deck 135 ft wide.

Who owns Md 929A over US 29 Future Ramp E?

It is owned by the State Highway Agency.