US Bridges

SR 299/MAIN Street over Appoquinimink River

Fair

New Castle County, Delaware · S/E Odessa Limits · Structure no. 1393 441

Built
1928
97 years old, rebuilt 1991
Condition
Fair
inspected April 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
99 ft
2 main spans
Daily traffic
3,582
2020 count
Owner
State
State Highway Agency

About this bridge

SR 299/MAIN Street over Appoquinimink River is a steel continuous stringer/multi-beam or girder carrying SR 299/MAIN Street over Appoquinimink River in New Castle County, Delaware. It was built in 1928 and reconstructed in 1991, so it is 97 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 3,582 vehicles a day, roughly 8% of them trucks, projected to reach 4,452 by 2042. The structure is 99 ft (30.1 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR 299/MAIN Street
CrossesAppoquinimink River
LocationS/E Odessa Limits
RouteState Highway 299
CountyNew Castle County
StateDelaware
Coordinates39.45262, -75.65491
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length99 ft (30.1 m)
Longest span48 ft (14.6 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,582 (2020)
Projected traffic4,452 by 2042
Trucks8%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$447,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 299/MAIN Street over Appoquinimink River built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1991.

What condition is SR 299/MAIN Street over Appoquinimink River 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 April 2021.

How much traffic does SR 299/MAIN Street over Appoquinimink River carry?

About 3,582 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is SR 299/MAIN Street over Appoquinimink River?

The structure is 99 ft (30.1 m) long with a longest span of 48 ft (14.6 m) and a deck 29 ft wide.

Who owns SR 299/MAIN Street over Appoquinimink River?

It is owned by the State Highway Agency.