US Bridges

Griffiths Lake DR over Griffith Lake Spillway

Fair

Sussex County, Delaware · West of Milford · Structure no. 3908 633

Built
1988
37 years old
Condition
Fair
inspected June 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
55 ft
1 main span
Daily traffic
1,421
2020 count
Owner
State
State Highway Agency

About this bridge

Griffiths Lake DR over Griffith Lake Spillway is a steel stringer/multi-beam or girder carrying Griffiths Lake DR over Griffith Lake Spillway in Sussex County, Delaware. It was built in 1988, so it is 37 years old, younger 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 1,421 vehicles a day, roughly 13% of them trucks, projected to reach 1,766 by 2042. The structure is 55 ft (16.8 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesGriffiths Lake DR
CrossesGriffith Lake Spillway
LocationWest of Milford
RouteCounty Highway 633
CountySussex County
StateDelaware
Coordinates38.91123, -75.46478
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
Deck7 GoodSome minor problems.
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 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 rating61.1 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length55 ft (16.8 m)
Longest span52 ft (15.7 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,421 (2020)
Projected traffic1,766 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Griffiths Lake DR over Griffith Lake Spillway built?

It was built in 1988, making it 37 years old in 2025.

What condition is Griffiths Lake DR over Griffith Lake Spillway 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 Griffiths Lake DR over Griffith Lake Spillway carry?

About 1,421 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Griffiths Lake DR over Griffith Lake Spillway?

The structure is 55 ft (16.8 m) long with a longest span of 52 ft (15.7 m) and a deck 35 ft wide.

Who owns Griffiths Lake DR over Griffith Lake Spillway?

It is owned by the State Highway Agency.