US Bridges

Thomas Run Road over Trib / Thomas Run

Fair

Harford County, Maryland · 2.1 Miles NE of Md 543 · Structure no. 200000H-0168030

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
1,690
2021 count
Owner
County
County Highway Agency

About this bridge

Thomas Run Road over Trib / Thomas Run is a steel culvert carrying Thomas Run Road over Trib / Thomas Run in Harford County, Maryland. It was built in 1973, so it is 52 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 6 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 1,690 vehicles a day, roughly 5% of them trucks, projected to reach 2,062 by 2041. The structure is 23 ft (7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesThomas Run Road
CrossesTrib / Thomas Run
Location2.1 Miles NE of Md 543
RouteCounty Highway 197
CountyHarford County
StateMaryland
Coordinates39.57764, -76.31075
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,690 (2021)
Projected traffic2,062 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Thomas Run Road over Trib / Thomas Run built?

It was built in 1973, making it 52 years old in 2025.

What condition is Thomas Run Road over Trib / Thomas 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 2023.

How much traffic does Thomas Run Road over Trib / Thomas Run carry?

About 1,690 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Thomas Run Road over Trib / Thomas Run?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).

Who owns Thomas Run Road over Trib / Thomas Run?

It is owned by the County Highway Agency.