US Bridges

FM 105 over Drainage Ditch

Fair

Orange County, Texas · 0.90 MI E of SH 62 · Structure no. 201810068902001

Built
1930
95 years old, rebuilt 1976
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
4,788
2016 count
Owner
State
State Highway Agency

About this bridge

FM 105 over Drainage Ditch is a concrete culvert carrying FM 105 over Drainage Ditch in Orange County, Texas. It was built in 1930 and reconstructed in 1976, so it is 95 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 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 4,788 vehicles a day, roughly 5% of them trucks, projected to reach 5,980 by 2033. The structure is 22 ft (6.7 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 105
CrossesDrainage Ditch
Location0.90 MI E of SH 62
RouteState Highway 105
StateTexas
Coordinates30.08139, -93.80726
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width41 ft (12.6 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,788 (2016)
Projected traffic5,980 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 105 over Drainage Ditch built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1976.

What condition is FM 105 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 March 2024.

How much traffic does FM 105 over Drainage Ditch carry?

About 4,788 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is FM 105 over Drainage Ditch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 41 ft wide.

Who owns FM 105 over Drainage Ditch?

It is owned by the State Highway Agency.