US Bridges

Md 77 over Big Pipe Creek

Fair

Carroll County, Maryland · 1.52 Mile West of Md 194 · Structure no. 100000060015010

Built
1977
48 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
198 ft
3 main spans
Daily traffic
841
2009 count
Owner
State
State Highway Agency

About this bridge

Md 77 over Big Pipe Creek is a steel continuous stringer/multi-beam or girder carrying Md 77 over Big Pipe Creek in Carroll County, Maryland. It was built in 1977, so it is 48 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 841 vehicles a day, roughly 8% of them trucks, projected to reach 1,120 by 2026. The structure is 198 ft (60.4 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMd 77
CrossesBig Pipe Creek
Location1.52 Mile West of Md 194
RouteState Highway 77
Coordinates39.60586, -77.26352
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length198 ft (60.4 m)
Longest span74 ft (22.6 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic841 (2009)
Projected traffic1,120 by 2026
Trucks8%
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

OwnerState Highway Agency
Maintained byState 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 Md 77 over Big Pipe Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Md 77 over Big Pipe 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 November 2024.

How much traffic does Md 77 over Big Pipe Creek carry?

About 841 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 77 over Big Pipe Creek?

The structure is 198 ft (60.4 m) long with a longest span of 74 ft (22.6 m) and a deck 42 ft wide.

Who owns Md 77 over Big Pipe Creek?

It is owned by the State Highway Agency.