US Bridges

Drawbridge Road over Transquaking River

Good

Dorchester County, Maryland · 1.38 Miles S of Aireys RD · Structure no. 200000D-0021010

Built
1992
33 years old
Condition
Good
inspected November 2023
Type
Slab
Wood or Timber
Length
96 ft
4 main spans
Daily traffic
570
2023 count
Owner
County
County Highway Agency

About this bridge

Drawbridge Road over Transquaking River is a wood or timber slab carrying Drawbridge Road over Transquaking River in Dorchester County, Maryland. It was built in 1992, so it is 33 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 570 vehicles a day, roughly 3% of them trucks, projected to reach 849 by 2043. The structure is 96 ft (29.3 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

No coordinates are recorded for this structure.

CarriesDrawbridge Road
CrossesTransquaking River
Location1.38 Miles S of Aireys RD
RouteCounty Highway 177
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating29.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span24 ft (7.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2023)
Projected traffic849 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Drawbridge Road over Transquaking River built?

It was built in 1992, making it 33 years old in 2025.

What condition is Drawbridge Road over Transquaking River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Drawbridge Road over Transquaking River carry?

About 570 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Drawbridge Road over Transquaking River?

The structure is 96 ft (29.3 m) long with a longest span of 24 ft (7.3 m) and a deck 28 ft wide.

Who owns Drawbridge Road over Transquaking River?

It is owned by the County Highway Agency.