US Bridges

Md 4 SB over Hall Creek

Fair

Calvert County, Maryland · .442 M N of Mt Harmony RD · Structure no. 100000040018012

Built
1929
96 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete
Length
65 ft
2 main spans
Daily traffic
16,982
2024 count
Owner
State
State Highway Agency

About this bridge

Md 4 SB over Hall Creek is a concrete tee beam carrying Md 4 SB over Hall Creek in Calvert County, Maryland. It was built in 1929, so it is 96 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 16,982 vehicles a day, roughly 3% of them trucks, projected to reach 20,272 by 2044. The structure is 65 ft (19.8 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 4 SB
CrossesHall Creek
Location.442 M N of Mt Harmony RD
RouteState Highway 4
Coordinates38.70924, -76.652
Functional classUrban Other Principal 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
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 inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span31 ft (9.4 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,982 (2024)
Projected traffic20,272 by 2044
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$172,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 4 SB over Hall Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is Md 4 SB over Hall 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 March 2024.

How much traffic does Md 4 SB over Hall Creek carry?

About 16,982 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Md 4 SB over Hall Creek?

The structure is 65 ft (19.8 m) long with a longest span of 31 ft (9.4 m) and a deck 40 ft wide.

Who owns Md 4 SB over Hall Creek?

It is owned by the State Highway Agency.