US Bridges

CR 306 over Blanket Creek

FairPosted for load

Brown County, Texas · 1.00 MI E of FM 590 · Structure no. 230250AA0306001

Built
1936
89 years old
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
61 ft
1 main span
Daily traffic
50
2013 count
Owner
County
County Highway Agency

About this bridge

CR 306 over Blanket Creek is a steel truss - thru carrying CR 306 over Blanket Creek in Brown County, Texas. It was built in 1936, so it is 89 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 50 by 2033. The structure is 61 ft (18.6 m) long and 13 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR 306
CrossesBlanket Creek
Location1.00 MI E of FM 590
RouteCounty Highway 306
CountyBrown County
StateTexas
Coordinates31.67753, -98.77368
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating14 US tons
Inventory rating10 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span60 ft (18.3 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2013)
Projected traffic50 by 2033
Trucks2%
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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 306 over Blanket Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is CR 306 over Blanket 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 March 2023.

How much traffic does CR 306 over Blanket Creek carry?

About 50 vehicles per day (2013 count), of which roughly 2% are trucks.

How long is CR 306 over Blanket Creek?

The structure is 61 ft (18.6 m) long with a longest span of 60 ft (18.3 m) and a deck 13 ft wide.

Who owns CR 306 over Blanket Creek?

It is owned by the County Highway Agency.