US Bridges

Franklin Gibson RD over Trotts Branch

Good

Anne Arundel County, Maryland · 2.1 MI S of Md 258 · Structure no. 200000AA8008010

Built
1993
32 years old
Condition
Good
inspected November 2023
Type
Slab
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
642
2023 count
Owner
County
County Highway Agency

About this bridge

Franklin Gibson RD over Trotts Branch is a prestressed concrete slab carrying Franklin Gibson RD over Trotts Branch in Anne Arundel County, Maryland. It was built in 1993, so it is 32 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 642 vehicles a day, roughly 9% of them trucks, projected to reach 800 by 2045. The structure is 29 ft (8.8 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFranklin Gibson RD
CrossesTrotts Branch
Location2.1 MI S of Md 258
RouteCounty Highway 3497
Coordinates38.76818, -76.5759
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating94.5 US tons
Inventory rating56.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic642 (2023)
Projected traffic800 by 2045
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Franklin Gibson RD over Trotts Branch built?

It was built in 1993, making it 32 years old in 2025.

What condition is Franklin Gibson RD over Trotts Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Franklin Gibson RD over Trotts Branch carry?

About 642 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Franklin Gibson RD over Trotts Branch?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 27 ft wide.

Who owns Franklin Gibson RD over Trotts Branch?

It is owned by the County Highway Agency.