US Bridges

Maple Ave over Mispillion River

Poor

Kent County, Delaware · Milford · Structure no. 2503 000

Built
1977
48 years old
Condition
Poor
inspected August 2024
Type
Culvert
Steel
Length
44 ft
3 main spans
Daily traffic
99
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Maple Ave over Mispillion River is a steel culvert carrying Maple Ave over Mispillion River in Kent County, Delaware. It was built in 1977, so it is 48 years old, older than the Delaware average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 99 vehicles a day, roughly 11% of them trucks, projected to reach 123 by 2042. The structure is 44 ft (13.4 m) long and 35 ft wide.

CarriesMaple Ave
CrossesMispillion River
LocationMilford
RouteCity Street 0
Coordinates38.91145, -75.4329
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2024
Inspection intervalevery 6 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span13 ft (4 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2023)
Projected traffic123 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Maple Ave over Mispillion River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Maple Ave over Mispillion River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Maple Ave over Mispillion River carry?

About 99 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Maple Ave over Mispillion River?

The structure is 44 ft (13.4 m) long with a longest span of 13 ft (4 m) and a deck 35 ft wide.

Who owns Maple Ave over Mispillion River?

It is owned by the City or Municipal Highway Agency.