US Bridges

SR 36 / Shawnee RD over Johnson Branch

Fair

Sussex County, Delaware · Southwest of Milford · Structure no. 3911 036

Built
1947
78 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
3,486
2022 count
Owner
State
State Highway Agency

About this bridge

SR 36 / Shawnee RD over Johnson Branch is a concrete slab carrying SR 36 / Shawnee RD over Johnson Branch in Sussex County, Delaware. It was built in 1947, so it is 78 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 3,486 vehicles a day, roughly 12% of them trucks, projected to reach 3,972 by 2042. The structure is 23 ft (7 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR 36 / Shawnee RD
CrossesJohnson Branch
LocationSouthwest of Milford
RouteState Highway 36
CountySussex County
StateDelaware
Coordinates38.87275, -75.47612
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating56.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span22 ft (6.6 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,486 (2022)
Projected traffic3,972 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 SR 36 / Shawnee RD over Johnson Branch built?

It was built in 1947, making it 78 years old in 2025.

What condition is SR 36 / Shawnee RD over Johnson 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 June 2023.

How much traffic does SR 36 / Shawnee RD over Johnson Branch carry?

About 3,486 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is SR 36 / Shawnee RD over Johnson Branch?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.6 m) and a deck 38 ft wide.

Who owns SR 36 / Shawnee RD over Johnson Branch?

It is owned by the State Highway Agency.