Bi 40 B over Drain

Good

Oldham County, Texas · 0.08 MI E of SH 214 · Structure no. 041800009007013

Built: 1937; 88 years old
Condition: Good; inspected September 2023
Type: Culvert; Concrete
Length: 34 ft; 6 main spans
Daily traffic: 260; 2013 count
Owner: State; State Highway Agency

About this bridge

Bi 40 B over Drain is a concrete culvert carrying Bi 40 B over Drain in Oldham County, Texas. It was built in 1937, so it is 88 years old, older 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 260 vehicles a day, roughly 10% of them trucks, projected to reach 370 by 2033. The structure is 34 ft (10.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBi 40 B

CrossesDrain

Location0.08 MI E of SH 214

RouteState Highway 40

CountyOldham County

StateTexas

Coordinates35.27195, -102.65449

Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionSeptember 2023

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 adequacy7: Better than 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 spans6

Design loadUnknown

Structure length34 ft (10.4 m)

Longest span5 ft (1.5 m)

Deck width45 ft (13.6 m)

Roadway width24 ft (7.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2013)

Projected traffic370 by 2033

Trucks10%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.2 mi (2 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 Bi 40 B over Drain built?

It was built in 1937, making it 88 years old in 2025.

What condition is Bi 40 B over Drain 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 September 2023.

How much traffic does Bi 40 B over Drain carry?

About 260 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Bi 40 B over Drain?

The structure is 34 ft (10.4 m) long with a longest span of 5 ft (1.5 m) and a deck 45 ft wide.

Who owns Bi 40 B over Drain?

It is owned by the State Highway Agency.