US Bridges

Hillen Road over Chinquapin Run

Fair

Baltimore city, Maryland · 0.2 MI N of Coldspring LA · Structure no. 200000BC3556020

Built
1900
125 years old, rebuilt 1950
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
11,996
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hillen Road over Chinquapin Run is a concrete culvert carrying Hillen Road over Chinquapin Run in Baltimore city, Maryland. It was built in 1900 and reconstructed in 1950, so it is 125 years old, older 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 11,996 vehicles a day, roughly 5% of them trucks, projected to reach 14,621 by 2036. The structure is 21 ft (6.4 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHillen Road
CrossesChinquapin Run
Location0.2 MI N of Coldspring LA
RouteCity Street 2570
CountyBaltimore city
StateMaryland
Coordinates39.3485, -76.58473
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
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
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span11 ft (3.4 m)
Deck width72 ft (21.9 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,996 (2016)
Projected traffic14,621 by 2036
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$33,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hillen Road over Chinquapin Run built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1950.

What condition is Hillen Road over Chinquapin Run 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 2024.

How much traffic does Hillen Road over Chinquapin Run carry?

About 11,996 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Hillen Road over Chinquapin Run?

The structure is 21 ft (6.4 m) long with a longest span of 11 ft (3.4 m) and a deck 72 ft wide.

Who owns Hillen Road over Chinquapin Run?

It is owned by the City or Municipal Highway Agency.