US Bridges

FM 1128 over Marys Creek

Good

Brazoria County, Texas · 1.25 MI S of FM 518 · Structure no. 120200168401005

Built
1984
41 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
107 ft
3 main spans
Daily traffic
10,040
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1128 over Marys Creek is a prestressed concrete box beam or girders - multiple carrying FM 1128 over Marys Creek in Brazoria County, Texas. It was built in 1984, so it is 41 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 10,040 vehicles a day, roughly 4% of them trucks, projected to reach 14,320 by 2033. The structure is 107 ft (32.6 m) long and 42 ft wide.

CarriesFM 1128
CrossesMarys Creek
Location1.25 MI S of FM 518
RouteState Highway 1128
StateTexas
Coordinates29.54126, -95.33075
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length107 ft (32.6 m)
Longest span35 ft (10.7 m)
Deck width42 ft (12.9 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,040 (2023)
Projected traffic14,320 by 2033
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 1128 over Marys Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is FM 1128 over Marys 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 October 2024.

How much traffic does FM 1128 over Marys Creek carry?

About 10,040 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is FM 1128 over Marys Creek?

The structure is 107 ft (32.6 m) long with a longest span of 35 ft (10.7 m) and a deck 42 ft wide.

Who owns FM 1128 over Marys Creek?

It is owned by the State Highway Agency.