US Bridges

Indigo Run over Drainage Ditch

Good

Comal County, Texas · 0.19 MI SE of Comal Run · Structure no. 150460AA8061001

Built
2008
17 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
45 ft
6 main spans
Daily traffic
107
2020 count
Owner
County
County Highway Agency

About this bridge

Indigo Run over Drainage Ditch is a concrete culvert carrying Indigo Run over Drainage Ditch in Comal County, Texas. It was built in 2008, so it is 17 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 107 vehicles a day, roughly 2% of them trucks, projected to reach 500 by 2037. The structure is 45 ft (13.7 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIndigo Run
CrossesDrainage Ditch
Location0.19 MI SE of Comal Run
RouteCity Street 0
CountyComal County
StateTexas
Coordinates29.78216, -98.40242
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome 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 geometry9: Superior to present desirable criteria
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 length45 ft (13.7 m)
Longest span6 ft (1.8 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic107 (2020)
Projected traffic500 by 2037
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Indigo Run over Drainage Ditch built?

It was built in 2008, making it 17 years old in 2025.

What condition is Indigo Run over Drainage Ditch 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 Indigo Run over Drainage Ditch carry?

About 107 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Indigo Run over Drainage Ditch?

The structure is 45 ft (13.7 m) long with a longest span of 6 ft (1.8 m) and a deck 40 ft wide.

Who owns Indigo Run over Drainage Ditch?

It is owned by the County Highway Agency.