US Bridges

Md 91 over Maryland Midland RR

Fair

Carroll County, Maryland · .14 Mile South of Md 879E · Structure no. 100000060047010

Built
1965
60 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
137 ft
3 main spans
Daily traffic
5,640
2009 count
Owner
State
State Highway Agency

About this bridge

Md 91 over Maryland Midland RR is a steel stringer/multi-beam or girder carrying Md 91 over Maryland Midland RR in Carroll County, Maryland. It was built in 1965, so it is 60 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 5,640 vehicles a day, roughly 8% of them trucks, projected to reach 6,964 by 2026. The structure is 137 ft (41.8 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMd 91
CrossesMaryland Midland RR
Location.14 Mile South of Md 879E
RouteState Highway 91
CountyCarroll County
StateMaryland
Coordinates39.50041, -76.88141
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating66.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span49 ft (14.9 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,640 (2009)
Projected traffic6,964 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 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 Md 91 over Maryland Midland RR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Md 91 over Maryland Midland RR 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 January 2023.

How much traffic does Md 91 over Maryland Midland RR carry?

About 5,640 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 91 over Maryland Midland RR?

The structure is 137 ft (41.8 m) long with a longest span of 49 ft (14.9 m) and a deck 35 ft wide.

Who owns Md 91 over Maryland Midland RR?

It is owned by the State Highway Agency.