US Bridges

FM 1764 over Highland Bayou Ditch

Fair

Galveston County, Texas · 2.2 MI W of IH 45 · Structure no. 120850160702018

Built
1997
28 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
110 ft
2 main spans
Daily traffic
20,153
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1764 over Highland Bayou Ditch is a prestressed concrete stringer/multi-beam or girder carrying FM 1764 over Highland Bayou Ditch in Galveston County, Texas. It was built in 1997, so it is 28 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 20,153 vehicles a day, roughly 1% of them trucks, projected to reach 24,990 by 2042. The structure is 110 ft (33.5 m) long and 87 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesFM 1764
CrossesHighland Bayou Ditch
Location2.2 MI W of IH 45
RouteState Highway 1764
CountyGalveston County
StateTexas
Coordinates29.39144, -95.06493
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span55 ft (16.8 m)
Deck width87 ft (26.5 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,153 (2023)
Projected traffic24,990 by 2042
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1764 over Highland Bayou Ditch built?

It was built in 1997, making it 28 years old in 2025.

What condition is FM 1764 over Highland Bayou Ditch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does FM 1764 over Highland Bayou Ditch carry?

About 20,153 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is FM 1764 over Highland Bayou Ditch?

The structure is 110 ft (33.5 m) long with a longest span of 55 ft (16.8 m) and a deck 87 ft wide.

Who owns FM 1764 over Highland Bayou Ditch?

It is owned by the State Highway Agency.