US Bridges

US 1 over Little Gunpowder Falls

Good

Baltimore County, Maryland · On Harford CO Line · Structure no. 100000030001010

Built
2010
15 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
115 ft
1 main span
Daily traffic
22,152
2009 count
Owner
State
State Highway Agency

About this bridge

US 1 over Little Gunpowder Falls is a prestressed concrete stringer/multi-beam or girder carrying US 1 over Little Gunpowder Falls in Baltimore County, Maryland. It was built in 2010, so it is 15 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 22,152 vehicles a day, roughly 5% of them trucks, projected to reach 33,200 by 2028. The structure is 115 ft (35.1 m) long and 71 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 1
CrossesLittle Gunpowder Falls
LocationOn Harford CO Line
RouteU.S. Route 1
Coordinates39.47609, -76.40839
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating62.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length115 ft (35.1 m)
Longest span108 ft (32.9 m)
Deck width71 ft (21.7 m)
Roadway width67 ft (20.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,152 (2009)
Projected traffic33,200 by 2028
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 US 1 over Little Gunpowder Falls built?

It was built in 2010, making it 15 years old in 2025.

What condition is US 1 over Little Gunpowder Falls 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 July 2024.

How much traffic does US 1 over Little Gunpowder Falls carry?

About 22,152 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is US 1 over Little Gunpowder Falls?

The structure is 115 ft (35.1 m) long with a longest span of 108 ft (32.9 m) and a deck 71 ft wide.

Who owns US 1 over Little Gunpowder Falls?

It is owned by the State Highway Agency.