US Bridges

Sorghum Mill Rd. over Tidbury Creek

Fair

Kent County, Delaware · Lebanon · Structure no. 2356A356A

Built
1989
36 years old
Condition
Fair
inspected September 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
4,215
2020 count
Owner
State
State Highway Agency

About this bridge

Sorghum Mill Rd. over Tidbury Creek is a prestressed concrete box beam or girders - multiple carrying Sorghum Mill Rd. over Tidbury Creek in Kent County, Delaware. It was built in 1989, so it is 36 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 4,215 vehicles a day, roughly 7% of them trucks, projected to reach 5,238 by 2042. The structure is 67 ft (20.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSorghum Mill Rd.
CrossesTidbury Creek
LocationLebanon
RouteCounty Highway 356A
CountyKent County
StateDelaware
Coordinates39.11612, -75.50147
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating47.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length67 ft (20.5 m)
Longest span64 ft (19.5 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,215 (2020)
Projected traffic5,238 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$331,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sorghum Mill Rd. over Tidbury Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Sorghum Mill Rd. over Tidbury Creek 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 September 2021.

How much traffic does Sorghum Mill Rd. over Tidbury Creek carry?

About 4,215 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Sorghum Mill Rd. over Tidbury Creek?

The structure is 67 ft (20.5 m) long with a longest span of 64 ft (19.5 m) and a deck 33 ft wide.

Who owns Sorghum Mill Rd. over Tidbury Creek?

It is owned by the State Highway Agency.