US Bridges

Andrews Lake RD over Andrews Lake

Fair

Kent County, Delaware · N/W of Frederica · Structure no. 2380A380

Built
1964
61 years old
Condition
Fair
inspected November 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
955
2021 count
Owner
State
State Highway Agency

About this bridge

Andrews Lake RD over Andrews Lake is a prestressed concrete box beam or girders - multiple carrying Andrews Lake RD over Andrews Lake in Kent County, Delaware. It was built in 1964, so it is 61 years old, older than the Delaware average of 47.3 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 955 vehicles a day, roughly 13% of them trucks, projected to reach 1,471 by 2042. The structure is 37 ft (11.2 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesAndrews Lake RD
CrossesAndrews Lake
LocationN/W of Frederica
RouteCounty Highway 380
Coordinates39.0249, -75.50852
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
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 inspectionNovember 2022
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating95.3 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span34 ft (10.3 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic955 (2021)
Projected traffic1,471 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Andrews Lake RD over Andrews Lake built?

It was built in 1964, making it 61 years old in 2025.

What condition is Andrews Lake RD over Andrews Lake 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 2022.

How much traffic does Andrews Lake RD over Andrews Lake carry?

About 955 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is Andrews Lake RD over Andrews Lake?

The structure is 37 ft (11.2 m) long with a longest span of 34 ft (10.3 m) and a deck 30 ft wide.

Who owns Andrews Lake RD over Andrews Lake?

It is owned by the State Highway Agency.