US Bridges

SR1 Sb/Coastal HWY over Waples Pond

Fair

Sussex County, Delaware · North of Milton · Structure no. 3815S014

Built
1973
52 years old
Condition
Fair
inspected June 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
9,151
2020 count
Owner
State
State Highway Agency

About this bridge

SR1 Sb/Coastal HWY over Waples Pond is a prestressed concrete box beam or girders - multiple carrying SR1 Sb/Coastal HWY over Waples Pond in Sussex County, Delaware. It was built in 1973, so it is 52 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 9,151 vehicles a day, roughly 12% of them trucks, projected to reach 11,374 by 2042. The structure is 46 ft (13.9 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1 Sb/Coastal HWY
CrossesWaples Pond
LocationNorth of Milton
RouteState Highway 1
Coordinates38.82406, -75.30876
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating63.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length46 ft (13.9 m)
Longest span39 ft (12 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,151 (2020)
Projected traffic11,374 by 2042
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1 Sb/Coastal HWY over Waples Pond built?

It was built in 1973, making it 52 years old in 2025.

What condition is SR1 Sb/Coastal HWY over Waples Pond 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 June 2021.

How much traffic does SR1 Sb/Coastal HWY over Waples Pond carry?

About 9,151 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is SR1 Sb/Coastal HWY over Waples Pond?

The structure is 46 ft (13.9 m) long with a longest span of 39 ft (12 m) and a deck 44 ft wide.

Who owns SR1 Sb/Coastal HWY over Waples Pond?

It is owned by the State Highway Agency.