US Bridges

CR 100 over Tonk Creek

Fair

Stonewall County, Texas · 1.4 MI S of US 380 · Structure no. 082170AA0155001

Built
1964
61 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
25
2020 count
Owner
County
County Highway Agency

About this bridge

CR 100 over Tonk Creek is a concrete culvert carrying CR 100 over Tonk Creek in Stonewall County, Texas. It was built in 1964, so it is 61 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 25 vehicles a day, projected to reach 100 by 2034. The structure is 26 ft (7.9 m) long and 21 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR 100
CrossesTonk Creek
Location1.4 MI S of US 380
RouteCounty Highway 100
CountyStonewall County
StateTexas
Coordinates33.11267, -100.21692
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 geometry4: Meets minimum tolerable limits to be 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 spans3
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2020)
Projected traffic100 by 2034
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 100 over Tonk Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is CR 100 over Tonk Creek 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 February 2024.

How much traffic does CR 100 over Tonk Creek carry?

About 25 vehicles per day (2020 count).

How long is CR 100 over Tonk Creek?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 21 ft wide.

Who owns CR 100 over Tonk Creek?

It is owned by the County Highway Agency.