US Bridges

Gardenhour RD over Little Antietam Creek

FairPosted for load

Washington County, Maryland · 0.45 MI W of Md RTE 64 · Structure no. 200000W-2431010

Built
1910
115 years old, rebuilt 1986
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
315
2015 count
Owner
County
County Highway Agency

About this bridge

Gardenhour RD over Little Antietam Creek is a steel stringer/multi-beam or girder carrying Gardenhour RD over Little Antietam Creek in Washington County, Maryland. It was built in 1910 and reconstructed in 1986, so it is 115 years old, older 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. Its operating status is: posted for load restriction.

It carries about 315 vehicles a day, roughly 5% of them trucks, projected to reach 434 by 2037. The structure is 24 ft (7.3 m) long and 15 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

No coordinates are recorded for this structure.

CarriesGardenhour RD
CrossesLittle Antietam Creek
Location0.45 MI W of Md RTE 64
RouteCounty Highway 775
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic315 (2015)
Projected traffic434 by 2037
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$200,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gardenhour RD over Little Antietam Creek built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1986.

What condition is Gardenhour RD over Little Antietam Creek 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 October 2023.

How much traffic does Gardenhour RD over Little Antietam Creek carry?

About 315 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Gardenhour RD over Little Antietam Creek?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 15 ft wide.

Who owns Gardenhour RD over Little Antietam Creek?

It is owned by the County Highway Agency.