US Bridges

Milltown RD over Mill Creek

Fair

New Castle County, Delaware · Milltown · Structure no. 1191 318

Built
1959
66 years old, rebuilt 2016
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
7,311
2023 count
Owner
State
State Highway Agency

About this bridge

Milltown RD over Mill Creek is a steel stringer/multi-beam or girder carrying Milltown RD over Mill Creek in New Castle County, Delaware. It was built in 1959 and reconstructed in 2016, so it is 66 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 7,311 vehicles a day, roughly 8% of them trucks, projected to reach 10,042 by 2042. The structure is 95 ft (29 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesMilltown RD
CrossesMill Creek
LocationMilltown
RouteCounty Highway 318
CountyNew Castle County
StateDelaware
Coordinates39.72974, -75.66851
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (29 m)
Longest span92 ft (28 m)
Deck width54 ft (16.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,311 (2023)
Projected traffic10,042 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 Milltown RD over Mill Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2016.

What condition is Milltown RD over Mill 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 June 2024.

How much traffic does Milltown RD over Mill Creek carry?

About 7,311 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Milltown RD over Mill Creek?

The structure is 95 ft (29 m) long with a longest span of 92 ft (28 m) and a deck 54 ft wide.

Who owns Milltown RD over Mill Creek?

It is owned by the State Highway Agency.