US Bridges

State ST over Isaac Branch-Moores Lake

Fair

Kent County, Delaware · Moores Lake · Structure no. 2027B027

Built
1919
106 years old, rebuilt 1957
Condition
Fair
inspected August 2023
Type
Arch - Deck
Concrete
Length
32 ft
1 main span
Daily traffic
11,225
2022 count
Owner
State
State Highway Agency

About this bridge

State ST over Isaac Branch-Moores Lake is a concrete arch - deck carrying State ST over Isaac Branch-Moores Lake in Kent County, Delaware. It was built in 1919 and reconstructed in 1957, so it is 106 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 11,225 vehicles a day, roughly 7% of them trucks, projected to reach 16,036 by 2042. The structure is 32 ft (9.8 m) long and 53 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesState ST
CrossesIsaac Branch-Moores Lake
LocationMoores Lake
RouteU.S. Route 113A
CountyKent County
StateDelaware
Coordinates39.12577, -75.51738
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width53 ft (16.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,225 (2022)
Projected traffic16,036 by 2042
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 State ST over Isaac Branch-Moores Lake built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1957.

What condition is State ST over Isaac Branch-Moores Lake 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 August 2023.

How much traffic does State ST over Isaac Branch-Moores Lake carry?

About 11,225 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is State ST over Isaac Branch-Moores Lake?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 53 ft wide.

Who owns State ST over Isaac Branch-Moores Lake?

It is owned by the State Highway Agency.