US Bridges

Unger Road over Grove Creek

Fair

Washington County, Maryland · 0.2 MI N Old Forge RD · Structure no. 200000W-2383010

Built
1908
117 years old, rebuilt 1989
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
498
2023 count
Owner
County
County Highway Agency

About this bridge

Unger Road over Grove Creek is a steel stringer/multi-beam or girder carrying Unger Road over Grove Creek in Washington County, Maryland. It was built in 1908 and reconstructed in 1989, so it is 117 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 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 498 vehicles a day, roughly 5% of them trucks, projected to reach 905 by 2045. The structure is 38 ft (11.6 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUnger Road
CrossesGrove Creek
Location0.2 MI N Old Forge RD
RouteCounty Highway 236
CountyWashington County
StateMaryland
Coordinates39.66726, -77.59946
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating90.5 US tons
Inventory rating54 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span33 ft (10.1 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic498 (2023)
Projected traffic905 by 2045
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Unger Road over Grove Creek built?

It was built in 1908, making it 117 years old in 2025. It was reconstructed in 1989.

What condition is Unger Road over Grove 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 Unger Road over Grove Creek carry?

About 498 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Unger Road over Grove Creek?

The structure is 38 ft (11.6 m) long with a longest span of 33 ft (10.1 m) and a deck 15 ft wide.

Who owns Unger Road over Grove Creek?

It is owned by the County Highway Agency.