US Bridges

Md 231 over Gilbert Creek

Good

Charles County, Maryland · 1.06 Miles West of Md 5 · Structure no. 100000080032010

Built
1930
95 years old, rebuilt 1991
Condition
Good
inspected January 2024
Type
Slab
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
2,592
2009 count
Owner
State
State Highway Agency

About this bridge

Md 231 over Gilbert Creek is a prestressed concrete slab carrying Md 231 over Gilbert Creek in Charles County, Maryland. It was built in 1930 and reconstructed in 1991, so it is 95 years old, older 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 2,592 vehicles a day, roughly 8% of them trucks, projected to reach 3,830 by 2026. The structure is 24 ft (7.3 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesMd 231
CrossesGilbert Creek
Location1.06 Miles West of Md 5
RouteState Highway 231
Coordinates38.52896, -76.80301
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.5 US tons
Inventory rating45.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,592 (2009)
Projected traffic3,830 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$43,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 231 over Gilbert Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1991.

What condition is Md 231 over Gilbert Creek 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 January 2024.

How much traffic does Md 231 over Gilbert Creek carry?

About 2,592 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 231 over Gilbert Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns Md 231 over Gilbert Creek?

It is owned by the State Highway Agency.