US Bridges

Coulbourne Mill RD over US 13

Fair

Wicomico County, Maryland · 1.21 MI S of Md 12 · Structure no. 100000220037010

Built
1976
49 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
272 ft
2 main spans
Daily traffic
3,411
2009 count
Owner
State
State Highway Agency

About this bridge

Coulbourne Mill RD over US 13 is a steel continuous stringer/multi-beam or girder carrying Coulbourne Mill RD over US 13 in Wicomico County, Maryland. It was built in 1976, so it is 49 years old, younger than the Maryland average of 52.6 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 3,411 vehicles a day, roughly 5% of them trucks, projected to reach 2,602 by 2025. The structure is 272 ft (82.9 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCoulbourne Mill RD
CrossesUS 13
Location1.21 MI S of Md 12
RouteCounty Highway 212
CountyWicomico County
StateMaryland
Coordinates38.32115, -75.58608
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.5 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length272 ft (82.9 m)
Longest span102 ft (31.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,411 (2009)
Projected traffic2,602 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Coulbourne Mill RD over US 13 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Coulbourne Mill RD over US 13 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 Coulbourne Mill RD over US 13 carry?

About 3,411 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Coulbourne Mill RD over US 13?

The structure is 272 ft (82.9 m) long with a longest span of 102 ft (31.1 m) and a deck 44 ft wide.

Who owns Coulbourne Mill RD over US 13?

It is owned by the State Highway Agency.