US Bridges

Brock Bridge Road over Little Patuxent River

Good

Anne Arundel County, Maryland · 1.0 Mile South of Md 32 · Structure no. 200000AA4002010

Built
1994
31 years old, rebuilt 2000
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
1 main span
Daily traffic
7,660
2022 count
Owner
County
County Highway Agency

About this bridge

Brock Bridge Road over Little Patuxent River is a steel stringer/multi-beam or girder carrying Brock Bridge Road over Little Patuxent River in Anne Arundel County, Maryland. It was built in 1994 and reconstructed in 2000, so it is 31 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 7,660 vehicles a day, roughly 3% of them trucks, projected to reach 13,473 by 2044. The structure is 105 ft (32 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesBrock Bridge Road
CrossesLittle Patuxent River
Location1.0 Mile South of Md 32
RouteCounty Highway 4912
Coordinates39.12065, -76.81193
Functional classRural Minor Arterial

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 inspectionJuly 2024
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.5 US tons
Inventory rating48.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span100 ft (30.5 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,660 (2022)
Projected traffic13,473 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Brock Bridge Road over Little Patuxent River built?

It was built in 1994, making it 31 years old in 2025. It was reconstructed in 2000.

What condition is Brock Bridge Road over Little Patuxent River 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 July 2024.

How much traffic does Brock Bridge Road over Little Patuxent River carry?

About 7,660 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Brock Bridge Road over Little Patuxent River?

The structure is 105 ft (32 m) long with a longest span of 100 ft (30.5 m) and a deck 37 ft wide.

Who owns Brock Bridge Road over Little Patuxent River?

It is owned by the County Highway Agency.