US Bridges

FM 1764 WB over Drainage Ditch No. 7B

Good

Galveston County, Texas · 0.70 MI W of SH 146 · Structure no. 120850160701015

Built
1989
36 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
125 ft
3 main spans
Daily traffic
16,141
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1764 WB over Drainage Ditch No. 7B is a concrete stringer/multi-beam or girder carrying FM 1764 WB over Drainage Ditch No. 7B in Galveston County, Texas. It was built in 1989, so it is 36 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 16,141 vehicles a day, roughly 4% of them trucks, projected to reach 24,535 by 2042. The structure is 125 ft (38.1 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFM 1764 WB
CrossesDrainage Ditch No. 7B
Location0.70 MI W of SH 146
RouteState Highway 1764
CountyGalveston County
StateTexas
Coordinates29.39572, -94.96306
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span42 ft (12.8 m)
Deck width50 ft (15.1 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,141 (2023)
Projected traffic24,535 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 FM 1764 WB over Drainage Ditch No. 7B built?

It was built in 1989, making it 36 years old in 2025.

What condition is FM 1764 WB over Drainage Ditch No. 7B 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 August 2024.

How much traffic does FM 1764 WB over Drainage Ditch No. 7B carry?

About 16,141 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is FM 1764 WB over Drainage Ditch No. 7B?

The structure is 125 ft (38.1 m) long with a longest span of 42 ft (12.8 m) and a deck 50 ft wide.

Who owns FM 1764 WB over Drainage Ditch No. 7B?

It is owned by the State Highway Agency.