US Bridges

Wwtp Road over Carroll Creek

Fair

Frederick County, Maryland · 1.8 MI East of Md 355 · Structure no. 200000F-F-01010

Built
1936
89 years old, rebuilt 1986
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
98 ft
3 main spans
Daily traffic
3,813
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wwtp Road over Carroll Creek is a steel continuous stringer/multi-beam or girder carrying Wwtp Road over Carroll Creek in Frederick County, Maryland. It was built in 1936 and reconstructed in 1986, so it is 89 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 3,813 vehicles a day, roughly 6% of them trucks, projected to reach 5,670 by 2042. The structure is 98 ft (30 m) long and 19 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWwtp Road
CrossesCarroll Creek
Location1.8 MI East of Md 355
RouteCity Street 995
CountyFrederick County
StateMaryland
Coordinates39.42747, -77.38208
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length98 ft (30 m)
Longest span35 ft (10.7 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,813 (2022)
Projected traffic5,670 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$106,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wwtp Road over Carroll Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1986.

What condition is Wwtp Road 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 April 2024.

How much traffic does Wwtp Road over Carroll Creek carry?

About 3,813 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Wwtp Road over Carroll Creek?

The structure is 98 ft (30 m) long with a longest span of 35 ft (10.7 m) and a deck 19 ft wide.

Who owns Wwtp Road over Carroll Creek?

It is owned by the City or Municipal Highway Agency.