US Bridges

Starners Dam Road over Monocacy River

Fair

Carroll County, Maryland · On Fred CO Line · Structure no. 200000CL0206010

Built
1918
107 years old, rebuilt 1996
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
203 ft
5 main spans
Daily traffic
36
2021 count
Owner
County
County Highway Agency

About this bridge

Starners Dam Road over Monocacy River is a steel stringer/multi-beam or girder carrying Starners Dam Road over Monocacy River in Carroll County, Maryland. It was built in 1918 and reconstructed in 1996, so it is 107 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.

It carries about 36 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2041. The structure is 203 ft (61.9 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesStarners Dam Road
CrossesMonocacy River
LocationOn Fred CO Line
RouteCounty Highway 7
Coordinates39.69784, -77.21623
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating110.1 US tons
Inventory rating61.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length203 ft (61.9 m)
Longest span40 ft (12.2 m)
Deck width20 ft (6 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2021)
Projected traffic60 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$223,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Starners Dam Road over Monocacy River built?

It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1996.

What condition is Starners Dam Road over Monocacy River 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 September 2023.

How much traffic does Starners Dam Road over Monocacy River carry?

About 36 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Starners Dam Road over Monocacy River?

The structure is 203 ft (61.9 m) long with a longest span of 40 ft (12.2 m) and a deck 20 ft wide.

Who owns Starners Dam Road over Monocacy River?

It is owned by the County Highway Agency.