US Bridges

Green Spring Road over Mill Run

Fair

Allegany County, Maryland · 0.08 MI N of Main ST · Structure no. 200000A-0078010

Built
1935
90 years old, rebuilt 1997
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
812
2023 count
Owner
County
County Highway Agency

About this bridge

Green Spring Road over Mill Run is a steel stringer/multi-beam or girder carrying Green Spring Road over Mill Run in Allegany County, Maryland. It was built in 1935 and reconstructed in 1997, 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 812 vehicles a day, roughly 5% of them trucks, projected to reach 991 by 2043. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesGreen Spring Road
CrossesMill Run
Location0.08 MI N of Main ST
RouteCounty Highway 542
CountyAllegany County
StateMaryland
Coordinates39.54054, -78.61166
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic812 (2023)
Projected traffic991 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Green Spring Road over Mill Run built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1997.

What condition is Green Spring Road over Mill 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 Green Spring Road over Mill Run carry?

About 812 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Green Spring Road over Mill Run?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 22 ft wide.

Who owns Green Spring Road over Mill Run?

It is owned by the County Highway Agency.