US Bridges

Redden Rd. over Gravelly Branch

Fair

Sussex County, Delaware · N.W. of Georgetown · Structure no. 3634 040

Built
1934
91 years old, rebuilt 1961
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
2,950
2022 count
Owner
State
State Highway Agency

About this bridge

Redden Rd. over Gravelly Branch is a steel stringer/multi-beam or girder carrying Redden Rd. over Gravelly Branch in Sussex County, Delaware. It was built in 1934 and reconstructed in 1961, so it is 91 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 2,950 vehicles a day, roughly 12% of them trucks, projected to reach 2,897 by 2042. The structure is 38 ft (11.6 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRedden Rd.
CrossesGravelly Branch
LocationN.W. of Georgetown
RouteCounty Highway 40
CountySussex County
StateDelaware
Coordinates38.7473, -75.46612
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length38 ft (11.6 m)
Longest span35 ft (10.8 m)
Deck width36 ft (10.9 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,950 (2022)
Projected traffic2,897 by 2042
Trucks12%
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 Redden Rd. over Gravelly Branch built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1961.

What condition is Redden Rd. over Gravelly Branch 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 May 2023.

How much traffic does Redden Rd. over Gravelly Branch carry?

About 2,950 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Redden Rd. over Gravelly Branch?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.8 m) and a deck 36 ft wide.

Who owns Redden Rd. over Gravelly Branch?

It is owned by the State Highway Agency.