US Bridges

Md 33 over Knapps Narrows

Good

Talbot County, Maryland · 0.91 M W of Benders Lane · Structure no. 100000200001010

Built
1998
27 years old
Condition
Good
inspected March 2023
Type
Movable - Bascule
Steel
Length
123 ft
3 main spans
Daily traffic
2,201
2022 count
Owner
State
State Highway Agency

About this bridge

Md 33 over Knapps Narrows is a steel movable - bascule carrying Md 33 over Knapps Narrows in Talbot County, Maryland. It was built in 1998, so it is 27 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 2,201 vehicles a day, roughly 8% of them trucks, projected to reach 2,750 by 2040. The structure is 123 ft (37.6 m) long and 38 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMd 33
CrossesKnapps Narrows
Location0.91 M W of Benders Lane
RouteState Highway 33
Coordinates38.71972, -76.33244
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating38.5 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length123 ft (37.6 m)
Longest span72 ft (21.9 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic2,201 (2022)
Projected traffic2,750 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Md 33 over Knapps Narrows built?

It was built in 1998, making it 27 years old in 2025.

What condition is Md 33 over Knapps Narrows 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 March 2023.

How much traffic does Md 33 over Knapps Narrows carry?

About 2,201 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Md 33 over Knapps Narrows?

The structure is 123 ft (37.6 m) long with a longest span of 72 ft (21.9 m) and a deck 38 ft wide.

Who owns Md 33 over Knapps Narrows?

It is owned by the State Highway Agency.