US Bridges

Green Road over Little Gunpowder Falls

Fair

Baltimore County, Maryland · 1.0 MI N Sweet Air RD · Structure no. 200000B-0008010

Built
1990
35 years old
Condition
Fair
inspected December 2023
Type
Truss - Thru
Steel
Length
102 ft
1 main span
Daily traffic
632
2024 count
Owner
County
County Highway Agency

About this bridge

Green Road over Little Gunpowder Falls is a steel truss - thru carrying Green Road over Little Gunpowder Falls in Baltimore County, Maryland. It was built in 1990, so it is 35 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 5 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 632 vehicles a day, roughly 5% of them trucks, projected to reach 787 by 2044. The structure is 102 ft (31.1 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesGreen Road
CrossesLittle Gunpowder Falls
Location1.0 MI N Sweet Air RD
RouteCounty Highway 270
CountyBaltimore County
StateMaryland
Coordinates39.52466, -76.49755
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating48.5 US tons
Inventory rating29 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span101 ft (30.8 m)
Deck width16 ft (4.8 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic632 (2024)
Projected traffic787 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Green Road over Little Gunpowder Falls built?

It was built in 1990, making it 35 years old in 2025.

What condition is Green Road over Little Gunpowder Falls 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 December 2023.

How much traffic does Green Road over Little Gunpowder Falls carry?

About 632 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Green Road over Little Gunpowder Falls?

The structure is 102 ft (31.1 m) long with a longest span of 101 ft (30.8 m) and a deck 16 ft wide.

Who owns Green Road over Little Gunpowder Falls?

It is owned by the County Highway Agency.