US Bridges

Isla Vista Drive over Mar Bella Detention

Good

Galveston County, Texas · 0.8 MI S of SH 96 · Structure no. 120850E00122234

Built
2014
11 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
400
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Isla Vista Drive over Mar Bella Detention is a concrete culvert carrying Isla Vista Drive over Mar Bella Detention in Galveston County, Texas. It was built in 2014, so it is 11 years old, younger than the Texas average of 44.4 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 400 vehicles a day, roughly 3% of them trucks, projected to reach 600 by 2040. The structure is 24 ft (7.3 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIsla Vista Drive
CrossesMar Bella Detention
Location0.8 MI S of SH 96
RouteCity Street 0
CountyGalveston County
StateTexas
Coordinates29.51429, -95.01103
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic600 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Isla Vista Drive over Mar Bella Detention built?

It was built in 2014, making it 11 years old in 2025.

What condition is Isla Vista Drive over Mar Bella Detention 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 Isla Vista Drive over Mar Bella Detention carry?

About 400 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Isla Vista Drive over Mar Bella Detention?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 27 ft wide.

Who owns Isla Vista Drive over Mar Bella Detention?

It is owned by the City or Municipal Highway Agency.