US Bridges

Md 18A over Cox Creek

Good

Queen Anne's County, Maryland · 0.6 Mile East of Md 835C · Structure no. 100000170001010

Built
1999
26 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
1,312
2009 count
Owner
State
State Highway Agency

About this bridge

Md 18A over Cox Creek is a steel stringer/multi-beam or girder carrying Md 18A over Cox Creek in Queen Anne's County, Maryland. It was built in 1999, so it is 26 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 1,312 vehicles a day, roughly 4% of them trucks, projected to reach 1,317 by 2026. The structure is 67 ft (20.4 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMd 18A
CrossesCox Creek
Location0.6 Mile East of Md 835C
RouteState Highway 18A
Coordinates38.97695, -76.30308
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length67 ft (20.4 m)
Longest span57 ft (17.4 m)
Deck width39 ft (11.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,312 (2009)
Projected traffic1,317 by 2026
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 18A over Cox Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Md 18A over Cox Creek 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 April 2023.

How much traffic does Md 18A over Cox Creek carry?

About 1,312 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is Md 18A over Cox Creek?

The structure is 67 ft (20.4 m) long with a longest span of 57 ft (17.4 m) and a deck 39 ft wide.

Who owns Md 18A over Cox Creek?

It is owned by the State Highway Agency.