US Bridges

C & R Center RD over Iron Mine Prong

Fair

Kent County, Delaware · West of Viola · Structure no. 2249A249

Built
1958
67 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
186
2022 count
Owner
State
State Highway Agency

About this bridge

C & R Center RD over Iron Mine Prong is a prestressed concrete box beam or girders - multiple carrying C & R Center RD over Iron Mine Prong in Kent County, Delaware. It was built in 1958, so it is 67 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 186 vehicles a day, roughly 17% of them trucks, projected to reach 134 by 2042. The structure is 27 ft (8.2 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesC & R Center RD
CrossesIron Mine Prong
LocationWest of Viola
RouteCounty Highway 249
Coordinates39.03532, -75.64561
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
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.7 m)
Deck width37 ft (11.3 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic186 (2022)
Projected traffic134 by 2042
Trucks17%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was C & R Center RD over Iron Mine Prong built?

It was built in 1958, making it 67 years old in 2025.

What condition is C & R Center RD over Iron Mine Prong 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 October 2023.

How much traffic does C & R Center RD over Iron Mine Prong carry?

About 186 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is C & R Center RD over Iron Mine Prong?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.7 m) and a deck 37 ft wide.

Who owns C & R Center RD over Iron Mine Prong?

It is owned by the State Highway Agency.