US Bridges

Iron Rail Street over Jennings Run

Fair

Allegany County, Maryland · 0.02 MI S of Md 36 · Structure no. 200000A-0055010

Built
1935
90 years old, rebuilt 1983
Condition
Fair
inspected October 2023
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
1,224
2019 count
Owner
County
County Highway Agency

About this bridge

Iron Rail Street over Jennings Run is a prestressed concrete slab carrying Iron Rail Street over Jennings Run in Allegany County, Maryland. It was built in 1935 and reconstructed in 1983, so it is 90 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 1,224 vehicles a day, roughly 5% of them trucks, projected to reach 1,509 by 2039. The structure is 34 ft (10.4 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

No coordinates are recorded for this structure.

CarriesIron Rail Street
CrossesJennings Run
Location0.02 MI S of Md 36
RouteCounty Highway 190
CountyAllegany County
StateMaryland
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.
Superstructure7 GoodSome minor problems.
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 inspectionOctober 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic1,224 (2019)
Projected traffic1,509 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Iron Rail Street over Jennings Run built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1983.

What condition is Iron Rail Street over Jennings 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 October 2023.

How much traffic does Iron Rail Street over Jennings Run carry?

About 1,224 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Iron Rail Street over Jennings Run?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns Iron Rail Street over Jennings Run?

It is owned by the County Highway Agency.