US Bridges

Old Milltown Rd. over Mill Creek

Fair

New Castle County, Delaware · Milltown · Structure no. 1192 318C

Built
1913
112 years old, rebuilt 1999
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
11,553
2021 count
Owner
State
State Highway Agency

About this bridge

Old Milltown Rd. over Mill Creek is a steel stringer/multi-beam or girder carrying Old Milltown Rd. over Mill Creek in New Castle County, Delaware. It was built in 1913 and reconstructed in 1999, so it is 112 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 5 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 11,553 vehicles a day, roughly 9% of them trucks, projected to reach 14,573 by 2042. The structure is 39 ft (11.9 m) long and 16 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesOld Milltown Rd.
CrossesMill Creek
LocationMilltown
RouteCounty Highway 318C
CountyNew Castle County
StateDelaware
Coordinates39.72963, -75.66772
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOther
Main spans1
Design loadH 20
Structure length39 ft (11.9 m)
Longest span35 ft (10.7 m)
Deck width16 ft (5 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,553 (2021)
Projected traffic14,573 by 2042
Trucks9%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$600,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Milltown Rd. over Mill Creek built?

It was built in 1913, making it 112 years old in 2025. It was reconstructed in 1999.

What condition is Old 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 March 2023.

How much traffic does Old Milltown Rd. over Mill Creek carry?

About 11,553 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Old Milltown Rd. over Mill Creek?

The structure is 39 ft (11.9 m) long with a longest span of 35 ft (10.7 m) and a deck 16 ft wide.

Who owns Old Milltown Rd. over Mill Creek?

It is owned by the State Highway Agency.