US Bridges

South Market Stree over Carroll Creek

Fair

Frederick County, Maryland · 510 South of Md 144 · Structure no. 200000F-F-06020

Built
1988
37 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
104 ft
1 main span
Daily traffic
8,900
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Market Stree over Carroll Creek is a concrete slab carrying South Market Stree over Carroll Creek in Frederick County, Maryland. It was built in 1988, so it is 37 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 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 8,900 vehicles a day, roughly 7% of them trucks, projected to reach 11,987 by 2039. The structure is 104 ft (31.7 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth Market Stree
CrossesCarroll Creek
Location510 South of Md 144
RouteState Highway 355
Coordinates39.69108, -77.68681
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1 (+4 approach)
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,900 (2019)
Projected traffic11,987 by 2039
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 South Market Stree over Carroll Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is South Market Stree over Carroll 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 June 2024.

How much traffic does South Market Stree over Carroll Creek carry?

About 8,900 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is South Market Stree over Carroll Creek?

The structure is 104 ft (31.7 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns South Market Stree over Carroll Creek?

It is owned by the City or Municipal Highway Agency.