US Bridges

FM 2917 over Drainage Ditch

Fair

Brazoria County, Texas · 1.34 MI E of SH 35 · Structure no. 120200293802002

Built
1959
66 years old, rebuilt 2001
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
122 ft
3 main spans
Daily traffic
2,785
2020 count
Owner
State
State Highway Agency

About this bridge

FM 2917 over Drainage Ditch is a concrete stringer/multi-beam or girder carrying FM 2917 over Drainage Ditch in Brazoria County, Texas. It was built in 1959 and reconstructed in 2001, so it is 66 years old, older 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 5 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 2,785 vehicles a day, roughly 4% of them trucks, projected to reach 2,900 by 2033. The structure is 122 ft (37.2 m) long and 47 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesFM 2917
CrossesDrainage Ditch
Location1.34 MI E of SH 35
RouteState Highway 2917
CountyBrazoria County
StateTexas
Coordinates29.32936, -95.26399
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length122 ft (37.2 m)
Longest span40 ft (12.2 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,785 (2020)
Projected traffic2,900 by 2033
Trucks4%
Lanes on structure2
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 2917 over Drainage Ditch built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2001.

What condition is FM 2917 over Drainage 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 November 2024.

How much traffic does FM 2917 over Drainage Ditch carry?

About 2,785 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is FM 2917 over Drainage Ditch?

The structure is 122 ft (37.2 m) long with a longest span of 40 ft (12.2 m) and a deck 47 ft wide.

Who owns FM 2917 over Drainage Ditch?

It is owned by the State Highway Agency.